Clutch Bolt Set, Heavy Duty, For Aircooled VW

OVERVIEW

When it comes to the drivetrain of your air-cooled Volkswagen, the smallest components often carry the heaviest burdens. This BUGPACK Heavy Duty Clutch Bolt Set is engineered specifically to handle the high-torque demands of performance engines and the rugged abuse of off-road environments. Standard hardware often falls short when paired with high-clamping-force pressure plates or aggressive driving styles, leading to bolt stretch or, in the worst-case scenarios, catastrophic failure within the bellhousing. By upgrading to these Grade 8 fasteners, you are ensuring that your pressure plate remains securely mated to the flywheel, maintaining consistent clutch engagement and preventing the vibration-induced loosening that can ruin an otherwise perfect weekend at the track or on the dunes. Trusting forty-year-old hardware is a gamble no builder should take when the solution is this accessible and robust.

This kit is not just about raw strength; it is about precision and reliability for the long haul. Each set includes six high-tensile bolts and six specialized wavy washers designed to provide constant tension and resist backing out under the intense heat and centrifugal force generated by the rotating assembly. Whether you are rebuilding a stock 1600cc daily driver or assembling a high-performance 2332cc stroker motor, the peace of mind provided by professional-grade hardware is invaluable. At Appletree Auto, we know that your VW is more than just a carit is a passionand using the right fasteners like this BUGPACK B409020 set is the difference between a job done and a job done right. Don''t settle for old, stretched hardware when your entire transmission''s integrity is on the line; ensure your engine''s power makes it to the ground every time you drop the clutch.

FITMENT

This heavy-duty clutch bolt set is designed for use with standard Volkswagen air-cooled flywheels (180mm and 200mm) found in the following models:

• VW Beetle (Standard & Super Beetle): 1950 through 1979
• VW Karmann Ghia: 1956 through 1974
• VW Bus / Transporter (Type 2): 1950 through 1971 (with Type 1 based upright engines)
• VW Type 3 (Squareback, Fastback, Notchback): 1962 through 1973
• VW Thing (Type 181): 1973 through 1974
• Custom Applications: Dune Buggies, Sand Rails, Baja Bugs, and Trikes utilizing a VW Type 1, 2, or 3 engine cases and flywheels.

SPECS

• Brand: BUGPACK Performance
• Part Number: B409020
• Hardware Grade: Grade 8 (High-Tensile Strength)
• Thread Size: M8 x 1.25
• Quantity: 6 Bolts and 6 Wavy Lock Washers
• Compatibility: Works with both 180mm and 200mm pressure plates
• Finish: Durable coating for corrosion and heat resistance
• Washer Type: High-tension wavy style to prevent backing out

PRO TIPS

1. Proper Torque and Pattern Are Critical

When installing your pressure plate, never tighten the bolts in a circular sequence. Always use a "star" or "criss-cross" pattern to ensure the pressure plate is pulled down evenly against the flywheel. This prevents warping the plate or putting uneven tension on the clutch disc. For these Grade 8 bolts, the standard torque specification is approximately 18 ft-lbs. Using a calibrated torque wrench is the only way to ensure they are tight enough to stay put without stripping the threads in your expensive flywheel.

2. Inspect Flywheel Threads and Use Loctite

Before installing your new BUGPACK bolt set, take a moment to inspect the threaded holes in the flywheel. Use a can of brake cleaner and a small brush to remove any old oil, grease, or debris. For an added layer of security, especially in high-vibration off-road or racing applications, apply a small drop of medium-strength (Blue) thread-locking compound to each bolt. This provides a secondary chemical lock that, when combined with the included wavy washers, virtually eliminates the risk of a bolt backing out inside the bellhousing.

3. Always Replace, Never Reuse

Clutch bolts are subject to extreme heat cycles and "clamping fatigue." While old bolts might look fine to the naked eye, they often suffer from microscopic stretching that weakens their holding power. Every time you have the engine pulled for a clutch disc replacement or a main seal fix, you should replace the pressure plate bolts. At this price point, it is the cheapest insurance policy you can buy to protect your engine, transmission, and the safety of your vehicle''s occupants from a potential clutch failure.