857133 O-Ring | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta O-ring from the Fuel System group, weighing 0.005 kg and listed for 23 applications across the DP, SP and MS ranges. O-ring 857134 in this run carries exactly the same 23 applications at 0.007 kg. Two grams is nowhere near enough to separate two O-rings, and no section or diameter is published for either, so order strictly by part number.

🚤 Compatibility

• Engine Family: DP, SP, MS

Full model list at the end of this description.

⚙️ Key Features

• Fuel System O-ring
• 0.005 kg
• 23 applications across DP, SP and MS
• Shares its fitment with O-ring 857134 - order by part number

🔌 Function

Seals a joint by compressing into its groove, holding fuel-tight against pressure and movement.

⚠️ Common Signs of Failure

• Fuel weeping or seeping at the joint
• Petrol or diesel smell around the assembly
• O-ring found flattened, nicked or hardened on strip-down
• Air drawn into the fuel side, causing hard starting or hunting
• Groove or spigot scored where the ring seats

🛠️ Service Notes

• O-ring 857134 shares the same 23 applications - the published weights do not separate the two, so order by number
• Check the groove and spigot for scoring before fitting; a scored seat will leak past a new ring
• Fuel leaks in a closed engine bay are a fire risk - check for weeping under pressure before running

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 740B, 501B, 570A, 572A, 430A, 430B, 431A, 431B, 432A, 434A, 570, 500B, 430
• Volvo Penta DP-C, DP-C1, DP-D, DP-D1, DP-A, DP-A2
• Volvo Penta SP-C, SP-A2, SP-C1
• Volvo Penta MS4B