IRS Outer Wheel Bearing, fits Beetle & Ghia 69-79, Premium

OVERVIEW

When it comes to the Independent Rear Suspension (IRS) on your classic Volkswagen, the outer wheel bearing is one of the most critical components for ensuring a smooth, quiet, and safe ride. This premium SKF-brand IRS outer wheel bearing is specifically designed to handle the intense lateral loads and high-speed rotations that occur within the trailing arm assembly. Unlike standard-grade bearings that may succumb to premature wear or heat fatigue, this premium version is engineered with tighter tolerances and superior metallurgy. Whether you are restoring a showroom-quality 1969 Beetle or building a rugged off-road Baja Bug, installing a high-quality bearing like the 113-501-277AP is the only way to guarantee long-term reliability and prevent the dreaded rear-end growl associated with bearing failure.

The IRS trailing arm setup is a significant upgrade over the earlier swing-axle design, but it requires precise maintenance to function correctly. This outer bearing sits at the extremity of the rear hub, supporting the stub axle as it transfers power to the wheels. Because these bearings take a massive beating from road vibration, moisture, and cornering forces, we always recommend replacing them whenever you are servicing your CV joints or upgrading your stub axles. Investing in this premium SKF bearing means you won''t have to tear your rear suspension apart again any time soon. It provides the structural integrity needed to maintain proper wheel alignment and prevents the overheating issues that often plague lesser, non-branded alternatives. At Appletree Automotive, we understand that your VW is more than just a car; it''s a passion, and that is why we only offer the best components for your drivetrain.

FITMENT

This premium outer wheel bearing is designed specifically for Volkswagen models equipped with Independent Rear Suspension (IRS). Please verify your vehicle year and suspension type before ordering:

• Volkswagen Beetle (Type 1): 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979 (Including Super Beetle)
• Volkswagen Karmann Ghia: 1969, 1970, 1971, 1972, 1973, 1974
• Volkswagen Type 3 (Squareback, Fastback, Notchback): 1969, 1970, 1971, 1972, 1973, 1974
• VW-Based Dune Buggies & Sand Rails: Any custom build utilizing 1969-later IRS trailing arms.

SPECS

This bearing is manufactured to exacting standards to ensure a perfect press-fit and exceptional service life. Below are the technical specifications for the 113-501-277AP:

• Brand: Premium Grade (SKF or equivalent high-tier manufacturer).
• Part Number: 113-501-277AP.
• Placement: Outer position, inside the IRS trailing arm bearing carrier.
• Inner Diameter (ID): 1.182 inches (approx. 30mm).
• Outer Diameter (OD): 2.440 inches (approx. 62mm).
• Thickness/Width: 0.630 inches (approx. 16mm).
• Bearing Type: Single-row ball bearing.
• Material: High-carbon chrome steel for maximum hardening and durability.
• Quantity: Sold individually (Two required per vehicle).

PRO TIPS

1. Always Inspect the Stub Axle and Spacer

When you have the trailing arm disassembled to replace the outer bearing, do not just swap the bearing and call it a day. Carefully inspect the surface of the stub axle where the bearing sits. If there is any pitting, scoring, or "bluing" from excessive heat, the new bearing may not seat correctly or could fail prematurely. Additionally, ensure the internal spacer between the inner and outer bearings is present and in good condition. If this spacer is crushed or missing, the bearings will be side-loaded when you torque the axle nut, leading to immediate failure of your new premium parts.

2. Use a Press and Never Strike the Inner Race

Installation is a precision job. You should always use a mechanical press or a dedicated bearing driver tool to install the new bearing into the housing. Never use a hammer directly on the bearing, as the shock can cause flat spots on the internal balls (brinelling). Furthermore, when pressing the bearing into the trailing arm, only apply pressure to the outer race. Applying pressure to the inner race during installation into the housing can ruin the bearing before it ever sees a mile of road. A light coat of multi-purpose grease on the outer diameter of the bearing can help it slide into the housing more smoothly.

3. Don''t Forget the Seals and High-Quality Grease

The longevity of your premium IRS outer bearing is entirely dependent on keeping contaminants out and lubrication in. Always install brand new inner and outer grease seals (Part # 113-501-315G) during this job. We recommend using a high-temperature, lithium-based wheel bearing grease. Pack the cavity between the inner roller bearing and this outer ball bearing about 60-70% full. Overfilling can lead to excess pressure that blows out the seals, while underfilling will lead to heat buildup. Cleanliness is key; ensure no sand or grit enters the bearing carrier during the reassembly process.