Crank Pulley Seal, for Type 2 1700 & 1800 Bus Engines

OVERVIEW

Maintain the integrity and performance of your air-cooled powerplant with this premium EMPI Crank Pulley Seal, specifically engineered for the Type 4 engine architecture found in late-model Volkswagen Transporters. As any seasoned VW veteran knows, the front crankshaft pulley-fan seal is a critical component that serves as the primary barrier between your engine''s precious oil supply and the outside world. This seal is designed to seat firmly into the engine case directly behind the fan pulley, creating a dynamic interface with the pulley hub. By providing a tight, consistent seal against the rotating assembly, it ensures that engine oil remains inside where it belongslubricating your bearingswhile simultaneously preventing road grit, dust, and moisture from infiltrating your crankcase. Whether you are performing a routine service or a complete long-block rebuild, replacing this seal is a non-negotiable step in preventing the dreaded "Bus drip" that can lead to messy driveways and, more importantly, dangerously low oil levels during long highway hauls.

Precision-manufactured to meet or exceed original equipment specifications, this seal (OEM part number 021-105-247A) is constructed from high-grade elastomeric materials designed to withstand the intense thermal cycles and high-RPM friction common in VW Bus engines. The Type 4 "pancake" engine relies heavily on its cooling fan and pulley assembly, making the seal''s role even more vital in maintaining a clean environment for the cooling system to operate efficiently. At Appletree Automotive, we understand that your Volkswagen isn''t just a vehicle; it''s a passion project. That is why we source components that offer the perfect balance of durability and fitment. Choosing this EMPI seal means you are investing in a component that has been tested for chemical resistance against modern synthetic and conventional oils, ensuring that the rubber won''t degrade prematurely under the harsh conditions found in a 1700cc or 1800cc engine bay. Don''t let a minor seal failure lead to a major engine headache; seal it right the first time with the quality you expect from the air-cooled experts.

FITMENT

This crank pulley seal is designed for the following Volkswagen models equipped with Type 4 (1700cc, 1800cc, and 2000cc) air-cooled engines:

• Volkswagen Type 2 Bus: 1972, 1973 (1700cc Engines)
• Volkswagen Type 2 Bus: 1974, 1975 (1800cc Engines)
• Volkswagen Type 2 Bus: 1976, 1977, 1978, 1979 (2000cc Engines)
• Volkswagen Vanagon (Air-Cooled): 1980, 1981, 1982, 1983 (2.0L Engines)
• Note: This seal is specific to the Type 4 engine case and will not fit Type 1 (Beetle/Ghia) or Type 3 engines.

SPECS

Detailed technical specifications for the EMPI 021-105-247A Crank Pulley Seal:

• OEM Part Number: 021-105-247A
• EMPI Part Number: 98-0151-B
• Material: High-temperature Nitrile Butadiene Rubber (NBR) with steel reinforcement.
• Seal Design: Double-lip design to provide primary oil retention and a secondary dust shield.
• Inside Diameter: Optimized for Type 4 pulley hub dimensions.
• Outer Diameter: Precision ground for a secure press-fit into the engine case bore.
• Weight: 0.1 lbs.
• Application: Front Crankshaft / Fan Pulley position.

PRO TIPS

1. Cleanliness is Next to Godliness

Before installing your new seal, it is imperative to thoroughly clean the engine case bore and the pulley hub surface. Use a lint-free rag and a bit of brake cleaner to remove any old oil residue, carbon buildup, or fragments from the previous seal. Inspect the pulley hub for any "grooving"if the old seal has worn a physical trench into the metal, the new seal may not seat properly and could continue to leak. If the groove is deep, you may need to utilize a speedi-sleeve or replace the pulley hub itself to ensure a leak-free installation.

2. Lubricate the Lip, Not the Bore

When you are ready to install the seal, apply a very light film of clean engine oil or assembly lube to the inner lip (the part that touches the rotating pulley). This prevents "dry start" friction which can burn or tear the seal lip during the first few seconds of engine operation. However, keep the outer diameter of the seal and the engine case bore dry and clean. You want the outer edge to have a firm, stationary grip on the case so it doesn''t rotate or "walk" out of position while you are cruising down the road.

3. Use a Proper Driver for Square Installation

Never hammer directly on the seal with a metal hammer, as this will distort the internal steel spring and ruin the seal before it ever sees a mile of use. Instead, use a dedicated seal driver tool or a large socket that matches the outer diameter of the seal. The goal is to tap the seal in evenly and "square" to the bore. If the seal goes in cockeyed, it will not provide a uniform seal around the crankshaft, leading to immediate leaks. Take your time and ensure it is seated flush with the engine case surface for the best possible results.