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
GM V6-V8 HYDRAULIC ROLLER TAPPET
Hydraulic tappet with a roller to follow the camshaft lobes.
Unlike the RHT817 pushers which are flat.
GM V6 - V8 PUSH ROD ROLLER
Push rod for GM V6 - V8 engines with all types of roller tappets.
Length: 183 mm
Diameter: 7.92 mm
GM V6/V8 RLI EXHAUST VALVE
Exhaust valve for GM Vortec type engines with a single keyway.
head diameter 38.2mm
tail diameter 8.8mm
height 125mm
FORD VALVE SPRING
Single valve spring for base Ford engines.
- External diameter: 35.4mm
- Inner diameter: 25.3mm
- Height: 49.9mm
SOUPAPE ADMISSION GM V6 (4.3L - 262CI) - GM V8 (5.7L - 350CI) RLI
Soupape d'admission pour moteur V6 4.3L et V8 5.7L disposant d'une seul encoche de clavetage.
diamètre de tête 49.20mm
diamètre de queue 8.68mm
hauteur 123.99mm
BB-496 HYDRAULIC ROLLER PUSHER
GM V6 - V8 RIGID VALVE STEM SEAL
GM VORTEC VALVE SPRING
Valve spring for V6 and V8 Vortec engines with a conical spring.
- External diameter: 31.75mm
- Inner diameter: 22.25mm
- Height: 51.33mm
GM INTAKE VALVE
Intake valve for GM base engine with the following dimensions:
- Head diameter: 49.26mm
- Tail diameter: 8.6mm
- Length: 124.19mm
VOLVO D4-D6 VALVE STEM SEAL
Intake and exhaust valve stem seal for Volvo Penta D4 - D6 series engines.
GM V6 VALVE STEM SEAL
GM EXHAUST VALVE
Exhaust valve of the following dimensions:
- Head diameter: 38.10mm
- Tail diameter: 8.66mm
- Length: 125.23mm
GM EXHAUST VALVE SEAT
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.












