High-Capacity Oil Pump – 021-115-107AK Ensure your engine's vitals remain protected with the 021-115-107AK High-Capacity Oil Pump. This pump is a critical upgrade for Volkswagen Type 4 engines, specifically designed to provide increased oil volume and more consistent pressure than the standard factory units. In the high-heat environment of an air-cooled engine bay, maintaining steady oil flow is the only way to protect expensive internal components like crankshaft bearings and camshaft lobes from premature wear. The 021-115-107AK features a precision-machined aluminum body and 26mm internal gears that move a significantly higher volume of oil per revolution. This is particularly beneficial for engines equipped with external oil coolers or those operating in hot climates. By moving more oil through the system, the pump not only improves lubrication but also aids in thermal management by carrying heat away from the engine's core more effectively. Detailed Vehicle Compatibility Porsche 914: 1970, 1971, 1972, 1973, 1974, 1975, 1976 VW Bus (Type 2): 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979 VW Vanagon (Air-Cooled): 1980, 1981, 1982, 1983 VW 411: 1971, 1972 VW 412: 1973, 1974 Product Highlights & Features Increased Volume: Larger internal gears provide a significant boost in oil flow compared to the original equipment 021-series pumps. Cast Aluminum Body: Lightweight and durable housing designed to dissipate heat and resist warping under high-pressure conditions. Precision Tolerance: Engineered with tight gear-to-body clearances to ensure maximum suction and eliminate "priming" issues on cold starts. Performance Ready: Ideal for stock rebuilds, heavy-duty Westfalia campers, or performance Porsche 914 street engines. Technical Specifications Part Number: 021-115-107AK Engine Type: Type 4 (1.7L, 1.8L, 2.0L) Drive Style: Flat-cam or "D-shaft" (Verify your camshaft drive type before ordering) Material: Aluminum Housing / Steel Gears Installation & Maintenance Tips Camshaft Drive Verification: Type 4 oil pumps come in two distinct drive styles: "Flat" (early) and "D-Shaft" (late). Before ordering, verify which camshaft you are using, as the pump tang must match the cam slot perfectly. Use the Correct Gaskets: This pump requires thin paper gaskets between the pump body and the engine case. Do not use RTV or silicone sealant here, as excess sealant can squeeze into the oil galleries and cause a total engine failure. Priming the Pump: Before installing the pump cover, pack the gears with a light coating of assembly lube or clean engine oil. This creates the initial suction needed to pull oil from the sump the very first time you turn the key. Check the Cover Plate: For maximum pressure, ensure your oil pump cover plate is perfectly flat. If the plate is scored or "stepped" from old gear wear, it will leak pressure internally; consider sanding it flat or replacing it with a heavy-duty steel version. 021115107AK
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