Marine cylinder head parts - Reliable components for your boat
Maintain or repair your boat’s upper engine components
Upper engine parts designed for marine engines
The upper engine components play a vital role in ensuring your boat's engine delivers performance, compression and reliability. We offer a wide selection of robust, marine-grade parts compatible with leading marine engine brands.
Enhance engine lifespan and performance at sea
Our upper engine parts are engineered to withstand corrosion, high temperatures and vibrations common in marine environments. They ensure proper sealing, compression and long-lasting reliability.
Our range of marine upper engine parts
- Cylinder heads and valve covers
- Upper engine gasket sets and head repair kits
- Valves, guides and marine-grade accessories
- Parts compatible with major marine engine brands
Trust our durable marine-grade components to service or rebuild your boat's upper engine for optimal performance at sea.
GM 4-6-8 VALVE KEY - FORD
Valve cotter for GM base engine sold individually.
Application :
- 4 cylinders
- 6 cylinders in line and in V
- V8 5 - 5.7 liters - SB
- V8 FORD 5 and 5.8 liters

OIL BREATHER INT. DIAM. 3/4"

GM INTAKE VALVE
Intake valve for GM base engine with the following dimensions:
- Head diameter: 49.26mm
- Tail diameter: 8.6mm
- Length: 124.19mm
BREATHER PLUG INSERT

FORD VALVE SPRING
Single valve spring for base Ford engines.
- External diameter: 35.4mm
- Inner diameter: 25.3mm
- Height: 49.9mm

GM V6 - V8 RIGID VALVE STEM SEAL

VOLVO CYLINDER HEAD SCREWS - 838775
Cylinder head bolt for the following Volvo Penta engines:
AD31, AD31B, AD31D-A, AD31L-A
AD31P-A, AD31XD, AD41A, AD41B
AD41D, AD41L-A, AD41P-A, AQAD30A
AQAD31A, AQAD40A, AQAD40B, AQAD41A
AQD40A, D41A, D41B, D41D
D41L-A, KAD300-A, KAD32P, KAD42A
KAD42B, KAD42P-A, KAD43P-A, KAD44P
KAD44P-B, KAD44P-C, KAMD300-A, KAMD42A
KAMD42B, KAMD42P-A, KAMD43P-A, KAMD44P-A
KAMD44P-C, MD30A, MD31A, MD40A
TAMD30A, TAMD31A, TAMD31B, TAMD31D
TAMD31L-A, TAMD31M-A, TAMD31P-A, TAMD31S-A
TAMD40A, TAMD40B, TAMD41A, TAMD41B
TAMD41D, TAMD41H-A, TAMD41H-B, TAMD41L-A
TAMD41M-A, TAMD41P-A, TAMD42B, TAMD42WJ-A
TD30A, TD31ACE, TD40A, TMD30A
TMD31A, TMD31B, TMD31D, TMD31L-A
TMD40A, TMD40B, TMD40C, TMD41A
TMD41B, TMD41D, TMD41L-A
19 pcs needed for a 4 cylinder engine
27 pcs needed for a 6 cylinder engine

GM EXHAUST VALVE
Exhaust valve of the following dimensions:
- Head diameter: 38.10mm
- Tail diameter: 8.66mm
- Length: 125.23mm
GM V6 VALVE STEM SEAL

YANMAR VALVE STEM SEAL
Yanmar valve stem seal with the following dimensions:
Interior: 12mm
Exterior: 14.7mm
Height: 9.2mm

GM EXHAUST VALVE SEAT

GM V6 ROLLER ROCKER ARM
Roller rocker arm for 4.3 liter V6 Vortec engine.
Rocker arm with a bearing inside.
GM V8 BB HP DOUBLE VALVE STEM SEAL
Valve stem seal for GM V8 454 or 502 engine with the following dimensions:
Inner diameter - guide: 13.462 mm
Outer diameter: 17.14mm
Valve diameter: 9.53mm
Height: 13mm
Gasket designed for installation with a cylinder head having 2 valve springs.

GM V8 BB VALVE KEY
Valve cotter for GM 7.4 and 8.2 litre V8 engines.

V8 FORD - GM 11/32 RIGID VALVE STEM SEAL
Inner diameter 12.9mm
Valve diameter 8.8mm
Height 12.5mm
BIG BLOCK CYLINDER HEAD SCREWS
GM V8 BB VALVE STEM SEAL - GM496 RIGID
Valvetail joint of dimensions:
Inside: 16mm
Exterior: 19mm
Height: 12mm
Sold individually.

GM 4 CYL - V6 - V8 DOUBLE VALVE SPRING
Valve spring with internal reinforcement for GM base engine types V6 and V8 non-Vortec.
- External diameter: 31.04mm
- Inner diameter: 22.05mm
- Height: 51.56mm
CHROME SCREW OIL CAP

VOLVO VALVE STEM SEAL - 21501189
Valve spring for the following Volvo Penta engines:
2001, 2002, 2003, 2001AG, 2001B, 2001BG, 2002AG. 2002B, 2002BG, 2002D, 2003 SOLAS , 2003 TB SOLAS . 2003B, 2003B SOLAS , 2003BG, 2003D, 2003T, 2003TB. AD31, AD31B, AD31D-A, AD31L-A, AD31P-A, AD31XD. AD41A, AD41B, AD41D, AD41L-A, AD41P-A, AQAD31A. AQAD41A, D12C MH, D12C-A MP, D12D-A MG, D12D-A MH. D12D-A MP, D12D-B MH, D12D-B MP, D12D-C MP. D12D-D MP, D12D-E MG, D12D-E MH, D12D-E MP. D12D-F MP, D12D-G MH, D12D-G MP, D12D-H MP. D41A, D41B, D41D, D41L-A, D9A2A, D9A2B, D9A2C. D9A2D, D9A2E, D9A2F, D9A2G, D9A2H, D9A2I, D9A2J. D9A2K, D9A2L MH, D9A2M MP, KAD32P, KAD42A, KAD42B. KAD42P-A, KAD43P-A, KAMD42A, KAMD42B, KAMD42P-A. KAMD43P, KAMD43P-A, KAMD43P-B, MD31A, TAD1240GE. TAD1241GE, TAD1242GE, TAD1242VE, TAD1250VE, TAD1251VE. TAD1252VE, TAD740GE, TAD741GE, TAD940GE, TAD940VE. TAD941GE, TAD941VE, TAD942VE, TAD943VE, TAD950VE. TAD951VE, TAD952VE, TAMD31A, AMD31B, TAMD31D. TAMD31L-A, TAMD31M-A, TAMD31P-A, TAMD31S-A, TAMD41A. TAMD41B, TAMD41D, TAMD41H-A, TAMD41H-B, TAMD41L-A. TAMD41M-A, TAMD41P-A, TAMD42B, TAMD42WJ-A. TAMD63L-A, TAMD63P-A, TAMD74A, TAMD74A-A, TAMD74A-B. TAMD74C-A, TAMD74C-B, TAMD74L-A, TAMD74L-B, TAMD74P-A. TAMD74P-B, TAMD75P-A, TD31ACE, TD610G, TD610V. TD630VE, TD640VE, TD730ME, TD730VE, TMD31A, TMD31B. TMD31D, TMD31L-A, TMD41A, TMD41B, TMD41D, TMD41L-A. TWD1240VE, TWD610G, TWD610V, TWD630VE, TWD730ME. TWD731ME, TWD731VE, TWD740GE, TWD740VE

BB HP INTAKE VALVE

VOLVO VALVE KEY - 861703

GM V6 - V8 SOFT VALVE STEM SEAL
Valve stem seal.
YANMAR CYLINDER HEAD NUT
