11158479 Adapter | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta reduction adapter fitted to the lubricating-oil filter housing on selected 16-litre engines. Two adapters are normally used to connect the housing to plugs, valves or adjoining oil passages and each adapter seals with O-ring 948610. The adapter is installed in oil-filter housings including 21169074 and later housing references. It is a lubrication-system component rather than a charge-air fitting.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD1650VE-B/51VE
• Volvo Penta TAD1643VE-B
• Volvo Penta TAD1640-42GE-B
• Volvo Penta TAD1640GE
• Volvo Penta TAD1640VE-B
• Volvo Penta TAD1641VE-B
• Volvo Penta TAD1642VE-B
• Volvo Penta TAD1641GE
• Volvo Penta TAD1642GE
• Volvo Penta TAD1641VE
• Volvo Penta TAD1642VE
• Volvo Penta TAD1643VE
• Volvo Penta TAD1650GE
• Volvo Penta TAD1651GE
• Volvo Penta TAD1660-62VE
• Volvo Penta TAD1662VE EU5
• Volvo Penta TAD1670-72VE
• Volvo Penta TAD1640-42VE-C

• Engine Family: TAD
• HP Range: Approximately 500-800 HP
• Year Range: Approximately 2000s - 2010s

⚙️ Key Features

• OEM Volvo Penta part number 11158479
• System group: Lubricating and Oil System
• Net weight: 0.254 kg
• Fits TAD1640, TAD1641, TAD1642, TAD1643, TAD1650, TAD1651, TAD1660-62 and TAD1670-72 series diesel engines
• Covers GE generator-set and VE industrial engine variants, including -B and -C series and TAD1662VE EU5
• Engine type: Volvo inline 6-cylinder 16-litre turbo-diesel

🔌 Function

The adapter forms a threaded or flanged interface point in the engine's lubricating oil circuit, allowing oil lines, filters or sensors to be correctly mounted and sealed. It maintains oil flow and pressure integrity between the connected components.

⚠️ Common Signs of Failure

• Oil weeping or dripping from the joint at the adapter
• Loss of oil pressure or fluctuating pressure readings
• Damaged, cross-threaded or corroded threads preventing a proper seal
• Cracking or distortion of the adapter body after over-torquing
• Repeated seal or gasket failure at the mating face

🛠️ Service Notes

• Check the adapter against both of the parts it has to join before fitting — adapters are specific to an engine and its variant, and one that is close but not correct will not seat or seal properly
• Clean and inspect both mating faces or connector ends; grit, old sealant or corrosion on one side is the usual reason an adapted joint leaks or works intermittently
• Renew any O-ring, gasket or sealing washer belonging to the joint rather than reusing the old one, and lubricate rubber seals lightly so they slide into place instead of rolling or nipping
• Tighten threaded adapters to the figure given in the workshop manual for that connection; many go into aluminium or onto a soft seat and will distort if pulled up hard
• Where the adapter is a workshop tool, check it for thread wear and damage before use and never modify it to make something fit

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21169074 related oil-filter housing
• 22655069 later oil-filter housing
• 23307312 related later oil-filter housing
• 948610 related O-ring
• 984733 related flange screw
• 3169687 related relief valve
• 3835956 related nipple

📦 Condition

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