Flywheel to Crankshaft Washer – 021-105-275 The 021-105-275 is a mandatory piece of hardware for any Type 2 Bus or Vanagon engine assembly. Unlike the Type 1 engine which uses a gland nut, the Type 4 engine utilizes a multi-bolt pattern to secure the flywheel. This washer ensures that those bolts maintain their torque settings by providing a flat, hardened mating surface. During a clutch job or engine rebuild, original washers are often found pitted or distorted; replacing them is a low-cost insurance policy against flywheel vibration and bolt loosening. This washer is the correct fitment for all air-cooled and water-cooled 2.0L engines based on the Type 4 architecture. Detailed Vehicle Compatibility VW Bus (Type 2 / Type 4 Engine): 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979 VW Vanagon (Air-Cooled & Waterboxer): 1980, 1981, 1982, 1983 Product Highlights & Features Precision Flatness: Machined to strict tolerances to ensure there is no "run-out" when the flywheel is torqued down, which helps maintain perfect engine balance. Corrosion-Resistant Coating: Finished to resist oil and moisture, preventing the rust-bonding that can make future flywheel removal difficult. OE Dimensions: A direct factory replacement that fits perfectly within the flywheel's center recess for a flush, professional installation. Technical Specifications Part Number: 021-105-275 Material: Hardened High-Tensile Steel Application: Flywheel to Crankshaft Mounting Engine Fitment: 1700cc, 1800cc, 2000cc (Type 4) Installation & Maintenance Tips Inspect for Burrs: Before installation, ensure both the crankshaft flange and the flywheel mating surfaces are clean and free of burrs. Even a tiny piece of debris behind this washer can cause the flywheel to sit slightly crooked. Always Use with New Bolts: When replacing this washer, it is highly recommended to also use new Flywheel Bolts (N0143351). These are "stretch" bolts and should not be reused if you want to ensure maximum safety. Torque to Spec: Use a high-quality torque wrench to tighten the flywheel bolts in a star pattern. This ensures the washer is compressed evenly and the flywheel is pulled onto the crankshaft flange squarely.
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