GM V8 BB RIGID VALVE STEM SEAL
Rigid valve stem seal for GM BB engine with single valve spring.
Dimensions:
Height 20.5mm
Bottom diameter: 22mm
Top diameter: 21mm
Valve diameter: 9mm
Inner diameter: 17.5mm - 20mm

Rigid valve stem seal for GM BB engine with single valve spring.
Dimensions:
Height 20.5mm
Bottom diameter: 22mm
Top diameter: 21mm
Valve diameter: 9mm
Inner diameter: 17.5mm - 20mm
Cylinder head bolt for GM 4 cylinder engine.
10 pieces are needed for a 4 cylinder engine.
Double valve spring with metal reinforcement with the following dimensions:
- External spring:
- External diameter: 37mm
- Inner diameter: 27mm
- Height: 57.5mm
- Inner spring:
- External diameter: 25mm
- Inner diameter: 18mm
- Height: 54mm
Cylinder head bolt for PCM - INDMAR - ILMOR engine:
Length under head: 45mm
Diameter: 7.5mm
Thread on 30mm
Rocker arm for GM 454 and 502 generation V and VI engines.
Valve spring for GM454 generation 4 - 5 engine with internal reinforcement with the following characteristics:
- External diameter: 38.2mm
- Inner diameter: 25mm
- Height: 54mm
Exhaust valve of the following dimensions:
Head diameter: 40.64 mm
Tail diameter: 8.67 mm
Length: 124.61 mm
Valve spring for V6 and V8 Vortec engines with a conical spring.
- External diameter: 31.75mm
- Inner diameter: 22.25mm
- Height: 51.33mm
Exhaust valve for GM454 -502 HO engines:
- Tail diameter: 9.45mm
- Head diameter: 47.68mm
Ressort de soupape double disposant des dimensions suivantes :
- Ressort extérieur :
- Diamètre extérieur : 36.4mm
- Diamètre intérieur : 27mm
- Hauteur : 51mm
- Ressort intérieur :
- Diamètre extérieur : 27mm
- Diamètre intérieur : 20mm
- Hauteur : 44.5mm
Rigid valve stem seal with the following dimensions:
Height: 12.5mm
Outer diameter: 17mm
Inner diameter: 14mm
Valve diameter: 7.8mm
Intake valve for GM454 -502 HO engines:
- Tail diameter: 9.45mm
- Head diameter: 55.62mm
Exhaust valve seat for GM BB engine with the following dimensions:
Exterior: 46mm
Interior: 39.45mm
Thickness: 5.85mm
Cylinder head bolt for PCM - INDMAR - ILMOR engine:
Length under head: 100mm
Diameter: 10.8mm
Thread on 55mm
Cylinder head nut for Volvo Penta engines of types:
MD1, MD1A, MD2, MD2A
MD1B, MD2B, MD3B
MD11C, MD11D, MD17C, MD17D
3 nuts required for a cylinder head.
Material including references: 994130 and 930872
Valve spring for Volvo Penta B18 - B20 - B30 4 cylinder engine.