Katech Engineering LLC - Gen 3 & 4 LS Cylinder Heads

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads

Built on decades of championship-winning engine development, Gen 3 and Gen 4 LS cylinder heads from Katech Engineering deliver proven airflow, durability, and power for street, strip, and road race applications. Every LS cylinder head is engineered, CNC machined, and assembled in-house at Katech’s Clinton Township, Michigan facility using processes refined through elite motorsports competition.

Katech Gen 3/4 LS cylinder heads are designed to optimize combustion efficiency, valvetrain stability, and high-RPM reliability across naturally aspirated, boosted, and competition-focused LS engine combinations. Precision port geometry and combustion chamber design work together to support consistent airflow and repeatable power.

With race-validated designs, exacting machining standards, and uncompromising quality control, Katech Gen 3/4 LS cylinder heads provide a professional-grade foundation for LS engines where performance and reliability are non-negotiable.

 

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Gen 3 & 4 LS Cylinder Heads Featured Products

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Items 1-60 of 70
GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech CNC Porting LS1 Truck 241, 806, 853 Cylinder Heads (PAIR)
Katech CNC Porting LS1 Truck 241, 806, 853 Cylinder Heads (PAIR)
In Stock
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Description: CNC Porting Service
Item #: KAT-M4321
Condition: New
Price: $561.99
Sale: $499.99
Save: 11%
Save: $62.00
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech CNC Porting LS1/Truck 862, 706 Cylinder Heads (PAIR)
Katech CNC Porting LS1/Truck 862, 706 Cylinder Heads (PAIR)
In Stock
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Description: CNC Porting Service
Item #: KAT-M7107
Condition: New
Price: $561.99
Sale: $499.99
Save: 11%
Save: $62.00
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech CNC Porting LS2/LS6/Truck 243, 799, 317, 035 Cylinder Heads (PAIR)
Katech CNC Porting LS2/LS6/Truck 243, 799, 317, 035 Cylinder Heads (PAIR)
In Stock
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Description: CNC Porting Service
Item #: KAT-M3835
Condition: New
Price: $561.99
Sale: $499.99
Save: 11%
Save: $62.00
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech CNC Porting LS3 L92 L99 L76 821, 823, 716 Cylinder Heads (PAIR)
Katech CNC Porting LS3 L92 L99 L76 821, 823, 716 Cylinder Heads (PAIR)
In Stock
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Description: CNC Porting Service
Item #: KAT-M7028
Condition: New
Price: $561.99
Sale: $499.99
Save: 11%
Save: $62.00
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech CNC Porting LS3/L92/L99/L76 364, 5364 Cylinder Heads (PAIR)
Katech CNC Porting LS3/L92/L99/L76 364, 5364 Cylinder Heads (PAIR)
In Stock
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Description: CNC Porting Service
Item #: KAT-M7412
Condition: New
Price: $561.99
Sale: $499.99
Save: 11%
Save: $62.00
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech CNC Porting LS7 8452 or LSX-LS7 Cylinder Heads (PAIR)
Katech CNC Porting LS7 8452 or LSX-LS7 Cylinder Heads (PAIR)
In Stock
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Description: CNC Porting Service
Item #: KAT-M6897
Condition: New
Price: $590.99
Sale: $499.99
Save: 15%
Save: $91.00
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech CNC Porting LSA/LS9 heads, 4863, 863 or 1771 Casting (PAIR)
Katech CNC Porting LSA/LS9 heads, 4863, 863 or 1771 Casting (PAIR)
In Stock
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Description: CNC Porting Service
Item #: KAT-M7090
Condition: New
Price: $561.99
Sale: $499.99
Save: 11%
Save: $62.00
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech LS7 or LSX-LS7 Combustion Chamber CNC Porting Service
Katech LS7 or LSX-LS7 Combustion Chamber CNC Porting Service
In Stock
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Description: CNC Chamber Porting Service
Item #: KAT-M7111
Condition: New
Price: $136.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech LS 243/799 Combustion Chamber Porting
Katech LS 243/799 Combustion Chamber Porting
In Stock
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Description: CNC Chamber Porting Service
Item #: KAT-M4470-R01
Condition: New
Price: $136.99
Sale: $123.29
Save: 10%
Save: $13.70
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech LS3 Combustion Chamber Porting
Katech LS3 Combustion Chamber Porting
In Stock
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Description: CNC Chamber Porting Service
Item #: KAT-M7112
Condition: New
Price: $136.99
Sale: $123.29
Save: 10%
Save: $13.70
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech LS .650 Lift Beehive Tool Steel Valve Spring Kit
Katech LS .650 Lift Beehive Tool Steel Valve Spring Kit
Backordered
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Description: For Most GM LS Heads | DOES NOT FIT NOT LS9 Heads
Item #: KAT-A7753-TS
Condition: New
Price: $787.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - BTR Platinum LS .660 Lift Dual Valve Spring Kit
BTR Platinum LS .660 Lift Dual Valve Spring Kit
In Stock
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Description: BTR PLATINUM LS DUAL SPRING KIT with steel retainers - .660" LIFT - SK001
Item #: BTR-SK001
Condition: New
Price: $319.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - BTR Platinum LS9 .660 Lift Dual Valve Spring Kit
BTR Platinum LS9 .660 Lift Dual Valve Spring Kit
In Stock
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Description: BTR PLATINUM LS9 DUAL SPRING KIT with steel retainers - .660" LIFT - SK006
Item #: BTR-SK006
Condition: New
Price: $369.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts LS7 Exhaust Valve
GM Genuine Parts LS7 Exhaust Valve
In Stock
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Description: OEM GM LS7 Exhaust Valve
Item #: GMP-12618110
Condition: New
Price: $62.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech LS .680 Lift Tool Steel Dual Valve Spring Kit
Katech LS .680 Lift Tool Steel Dual Valve Spring Kit
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Description: For Most LS Heads| DOES NOT FIT LS9 Heads
Item #: KAT-A7919-TS
Condition: New
Price: $787.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - PSI LS, LT1, L83 & LT4 .625 High Lift Valve Springs
PSI LS, LT1, L83 & LT4 .625 High Lift Valve Springs
In Stock
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Description: High lift valve springs for all LS & LT engines.
Item #: PSI-LS1511
Condition: New
Price: $22.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - PSI LS, LT1, L83 & LT4 .660" High Lift Valve Springs
PSI LS, LT1, L83 & LT4 .660" High Lift Valve Springs
In Stock
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Description: High lift valve springs for all LS & LT engines.
Item #: PSI-LS1516
Condition: New
Price: $24.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Bronze Valve Guide Installation Service
Bronze Valve Guide Installation Service
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Description: Install bronze valve guides
Item #: /S-BRONZEGUIDES
Condition: New
Price: $311.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Custom Logo Laser Etching Setup Fee For LS Cylinder Heads
Custom Logo Laser Etching Setup Fee For LS Cylinder Heads
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Description: One-time fee to set up a new logo for laser etching
Item #: /S-LASERETCHSETUP
Condition: New
Price: $59.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Custom LS Cylinder Heads Logo Laser Etching
Custom LS Cylinder Heads Logo Laser Etching
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Description: For Gen 3-4 LS cylinder heads only
Item #: /S-CUSTOMLASER-CYLHD
Condition: New
Price: $0.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Cylinder Head Deburr Service
Cylinder Head Deburr Service
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Description: Cylinder head deburring service to restore your cylinder heads
Item #: /S-HEADDEBURR
Condition: New
Price: $161.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Deck Cylinder Heads - Amount To Deck: .005"
Deck Cylinder Heads - Amount To Deck: .005"
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Item #: /S-DECKHEADS.005
Condition: New
Price: $177.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Deck Cylinder Heads - Amount To Deck: .010"
Deck Cylinder Heads - Amount To Deck: .010"
(0) Reviews: Write first review
Item #: /S-DECKHEADS.010
Condition: New
Price: $177.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Deck Cylinder Heads - Amount To Deck: .015"
Deck Cylinder Heads - Amount To Deck: .015"
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Item #: /S-DECKHEADS.015
Condition: New
Price: $177.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Deck Cylinder Heads - Amount To Deck: .020"
Deck Cylinder Heads - Amount To Deck: .020"
(0) Reviews: Write first review
Item #: /S-DECKHEADS.020
Condition: New
Price: $177.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Deck Cylinder Heads - Amount To Deck: .030"
Deck Cylinder Heads - Amount To Deck: .030"
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Item #: /S-DECKHEADS.030
Condition: New
Price: $177.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Disassemble Cylinder Heads
Disassemble Cylinder Heads
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Description: Service
Item #: /S-DISASSEMBLE-CYL
Condition: New
Price: $69.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech Competition Assemble LS Cylinder Heads - Build Configuration: Customer Supplied Cam Spec's
Katech Competition Assemble LS Cylinder Heads - Build Configuration: Customer Supplied Cam Spec's
(0) Reviews: Write first review
Description: Service
Item #: /S-ASSEMBLE-CYL-CLS
Condition: New
Price: $177.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech Competition Valve job & Cylinder Head Deburr
Katech Competition Valve job & Cylinder Head Deburr
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Description: Competition valve job
Item #: /S-VALVEJOB
Condition: New
Price: $427.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech Cylinder Heads Washing Service
Katech Cylinder Heads Washing Service
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Description: Service
Item #: /S-WASH-CYL
Condition: New
Price: $138.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech Hand Blend the Valve Job & Bowl Blending
Katech Hand Blend the Valve Job & Bowl Blending
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Description: Highly recommended when a competition valve job is added to our CNC porting
Item #: /S-HANDBLEND
Condition: New
Price: $161.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech Valve Reconditioning Service
Katech Valve Reconditioning Service
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Description: Recondition Valves
Item #: /S-RECONDITIONVALVES
Condition: New
Price: $142.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Labor (Half Hour)
Labor (Half Hour)
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Item #: /TECHNICIAN.5
Condition: New
Price: $80.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - CHE LS Bronze Valve Guide Old Design
CHE LS Bronze Valve Guide Old Design
In Stock
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Description: For all LS heads
Item #: KAT-7831
Condition: New
Price: $14.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - CHE LT1 & LS Bronze Valve Guide
CHE LT1 & LS Bronze Valve Guide
In Stock
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Description: For LT1 & LS Heads
Item #: KAT-7832
Condition: New
Price: $13.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Ferrea LS7 Exhaust Valve Set
Ferrea LS7 Exhaust Valve Set
Backordered
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Description: Ferrea LS7 Hollow Stem Exhaust Valve
Item #: FER-F2042-8
Condition: New
Price: $451.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Ferrea Stainless Steel Exhaust Valve
Ferrea Stainless Steel Exhaust Valve
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Description: Gen 3/4 Stainless steel exhaust valve
Condition: New
Price: $28.49

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Ferrea Stainless Steel Intake Valve
Ferrea Stainless Steel Intake Valve
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Description: Gen 3/4 Stainless steel intake valve
Condition: New
Price: $28.49

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts Cylinder LS2 & LS6 Cylinder Head Gasket
GM Genuine Parts Cylinder LS2 & LS6 Cylinder Head Gasket
In Stock
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Description: OEM LS2 & LS6 Cylinder Head Gasket
Item #: GMP-12589227
Condition: New
Price: $73.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts Engine Exhaust Valve Stem Oil Seal Kit
GM Genuine Parts Engine Exhaust Valve Stem Oil Seal Kit
In Stock
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Description: SET OF 8 | singles use 12645472
Item #: GMP-12482062
Condition: New
Price: $52.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts Engine Intake Valve Stem Oil Seal Kit
GM Genuine Parts Engine Intake Valve Stem Oil Seal Kit
Backordered
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Description: Seal/seat combination style, set of 8 for singles use 12645673
Item #: GMP-12482063
Condition: New
Price: $48.99
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GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts GM LS3 Intake Valve
GM Genuine Parts GM LS3 Intake Valve
In Stock
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Description: OEM GM LS3 Intake Valve
Item #: GMP-12569427
Condition: New
Price: $59.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts Inconel LS3 Engine Exhaust Valve
GM Genuine Parts Inconel LS3 Engine Exhaust Valve
In Stock
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Description: OEM GM Inconel LS3 Exhaust Valve
Item #: GMP-12612427
Condition: New
Price: $35.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts Intake Valve Stem Oil Seal
GM Genuine Parts Intake Valve Stem Oil Seal
In Stock
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Description: Single Seal Only
Item #: GMP-12533586
Condition: New
Price: $4.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts L92 Intake Valve
GM Genuine Parts L92 Intake Valve
Backordered
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Description: OEM GM L92 Intake Valve solid stem also fits LS3/LSA/LS9
Item #: GMP-12627970
Condition: New
Price: $26.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts LS Exhaust Manifold Gasket
GM Genuine Parts LS Exhaust Manifold Gasket
In Stock
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Description: LS Header Exhaust Manifold Gasket | DOES NOT FIT LS7
Item #: GMP-12617944
Condition: New
Price: $22.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts LS1 & LS6 Cylinder Head Gasket
GM Genuine Parts LS1 & LS6 Cylinder Head Gasket
In Stock
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Description: LS1 & LS6 Cylinder Head Gasket
Item #: GMP-12589226
Condition: New
Price: $59.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts LS3 & LS9 Cylinder Head Gasket
GM Genuine Parts LS3 & LS9 Cylinder Head Gasket
In Stock
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Description: OEM LS3 cylinder head gasket
Item #: GMP-12610046
Condition: New
Price: $102.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts LS3 Exhaust Valve
GM Genuine Parts LS3 Exhaust Valve
In Stock
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Description: OEM GM LS3 Exhaust Valve
Item #: GMP-12582719
Condition: New
Price: $33.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts LS7 Cylinder Head Gasket
GM Genuine Parts LS7 Cylinder Head Gasket
In Stock
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Description: OEM LS7 Cylinder Head Gasket
Item #: GMP-12582179
Condition: New
Price: $75.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts LS7 Exhaust Manifold Gasket
GM Genuine Parts LS7 Exhaust Manifold Gasket
In Stock
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Description: LS7 D Port Exhaust Manifold Gasket
Item #: GMP-12594171
Condition: New
Price: $54.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts LS7, LS9, LT4 & LT5 Intake Valve Rocker Arm Lash Cap Wear Pad Kit
GM Genuine Parts LS7, LS9, LT4 & LT5 Intake Valve Rocker Arm Lash Cap Wear Pad Kit
In Stock
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Description: LS7, LS9, LT4 & LT5 Intake Valve Rocker Arm Lash Cap Wear Pad Kit
Item #: GMP-19302366
Condition: New
Price: $31.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Genuine Parts LS9 Cylinder Head Gasket
GM Genuine Parts LS9 Cylinder Head Gasket
In Stock
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Description: OEM LS9 Cylinder Head Gasket
Item #: GMP-12622033
Condition: New
Price: $87.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM LS2, LS3, & LS6 Valve Spring Retainer
GM LS2, LS3, & LS6 Valve Spring Retainer
In Stock
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Description: For LS2, LS3, and LS6 Engines
Item #: GMP-10166344
Condition: New
Price: $7.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - GM Valve Lock
GM Valve Lock
In Stock
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Description: Sold in halves. 32 required per engine
Item #: GMP-10166345
Condition: New
Price: $3.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech Dual Valve Spring Kit Spring Seat
Katech Dual Valve Spring Kit Spring Seat
In Stock
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Description: For LS heads with dual springs and OEM or most bronze guides
Item #: KAT-7536
Condition: New
Price: $8.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech Extreme Duty H13 Tool Steel Dual Spring Valve Spring Retainer
Katech Extreme Duty H13 Tool Steel Dual Spring Valve Spring Retainer
In Stock
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Description: Designed for use with PSI-LS1512 or PSI-LS1513 dual valve springs
Item #: KAT-7715
Condition: New
Price: $16.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech H13 Tool Steel Extreme Duty Valve Spring Retainer
Katech H13 Tool Steel Extreme Duty Valve Spring Retainer
In Stock
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Description: Designed for use with PSI-LS1511 or PSI-LS1516 valve springs
Item #: KAT-7128
Condition: New
Price: $16.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech LS, LT1, L83 & LT4 Titanium Valve Spring Retainer
Katech LS, LT1, L83 & LT4 Titanium Valve Spring Retainer
In Stock
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Description: For PSI LS1511 spring
Item #: KAT-4678
Condition: New
Price: $19.99
Qty:

GM Cylinder Heads, Parts & Services - Gen 3 & 4 LS Cylinder Heads - Katech Engineering - Katech LS7 & LS4 Lash Cap
Katech LS7 & LS4 Lash Cap
In Stock
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Description: For stock LS7 & LT4 Heads
Item #: KAT-4682
Condition: New
Price: $17.99
Qty:

Items 1-60 of 70