111-198-029 VW Oil Cooler Conversion Seals (8mm to 10mm) - Set of 2

VW Oil Cooler Conversion Seals – 111-198-029

Successfully upgrade your engine's cooling system with this specialized Oil Cooler Conversion Seal Kit. When installing a high-efficiency "Doghouse" style oil cooler onto an earlier 1300cc, 1500cc, or 1600cc engine case, you will encounter a mismatch in port sizes. Early cases use 8mm oil passages, while later coolers use larger 10mm passages. These "step-down" seals are the only way to bridge that gap without causing a massive oil leak or pressure drop.

The 111-198-029 kit consists of two heavy-duty rubber seals featuring a unique dual-diameter design. One side fits snugly into the 8mm case holes, while the other expands to seal against the 10mm cooler flange. Using standard seals in this application will result in immediate failure; these conversion seals are required for any "Doghouse" conversion on an early-style engine case.

Detailed Vehicle Compatibility These seals are required when using a later cooler on these early-case models:

VW Beetle (Standard):

• 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969

VW Bus (Type 2):

• 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969

VW Karmann Ghia:

• 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969

Product Highlights & Features Correct "Step" Diameter: Precision molded to adapt 8mm case passages to 10mm oil cooler inlets perfectly.

High-Temperature Rubber: Made from oil-resistant nitrile rubber that maintains its elasticity under the extreme heat of the engine's oiling system.

Critical Leak Prevention: Specifically designed to withstand the high oil pressures of a cold start without blowing out or deforming.

Essential for Upgrades: The mandatory hardware for anyone replacing an early "upright" cooler with a more efficient later-model doghouse setup.

Technical Specifications Part Number: 111-198-029

Inner Diameter: 8mm (Case Side)

Outer Diameter: 10mm (Cooler Side)

Quantity: Set of 2 Seals

Installation & Maintenance Tips Orientation is Key: Ensure the smaller "8mm" side is seated firmly into the engine case passages and the larger "10mm" side is facing the oil cooler.

Check for Debris: Before installing, ensure the oil passages in the case are free of old rubber fragments. A clean seat is required for these adapter seals to function correctly.

Use the Right Bracket: When performing a doghouse conversion, remember that you must also use the correct adapter bracket to move the cooler away from the fan shroud.

No Sealant Needed: Like most VW engine seals, these should be installed clean and dry. RTV silicone can actually cause the seals to slip out of position during assembly.

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