21415584 Cap | Genuine Volvo Penta Part

🔧 Product Description

Threaded or retained service cap used on the applicable Volvo Penta engine oil-filter housing. It closes the filter opening, compresses the specified seal and permits access to the internal filter element during scheduled servicing.

⚙️ Key Features

• Genuine Volvo Penta oil-filter housing cap
• Designed for the matching cartridge-style filter housing
• Maintains oil pressure with the specified sealing ring
• Provides service access to the internal filter element
• Replace if cracked, distorted or damaged by incorrect tools
• Engine type: Volvo Penta diesel-engine lubrication system

🔌 Function

Seals the top of the oil-filter housing and retains the replaceable filter element while allowing access during oil service.

⚠️ Common Signs of Failure

• Oil leakage around the cap seal
• Cracked cap or damaged tool drive
• Stripped threads or failure to tighten correctly
• Low oil level caused by external leakage
• Cap seized from overtightening or contaminated threads

🛠️ Service Notes

• Clean and inspect the seating face on the housing as well as the cap — most leaks past a cap are the seat or the seal rather than the cap body
• Renew any separate O-ring or gasket that goes with the cap, and lubricate rubber seals lightly with clean oil or grease so they slide home instead of rolling or tearing
• Do not over-tighten a cap into a plastic or aluminium housing; it seals on its gasket or O-ring, not on force, and stripped threads mean a much bigger repair
• Where a cap blanks a port during a repair, keep it fitted right up to the moment of assembly so nothing enters the opening
• Check the cap is fully home and that any retaining clip, lanyard or locking tab is secure before returning the boat to service

📦 Condition

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