MAHLE Main Bearing Set — Case 1.00mm / Crank .25mm / Thrust 1.00mm | VW Type 1 1200–1600cc (98-1830-B)

MAHLE Main Bearing Set — VW Type 1 1200–1600cc (Case 1.00mm / Crank .25mm / Thrust 1.00mm, 98-1830-B)

Genuine MAHLE crankshaft main bearing set for the VW Type 1 air-cooled engine (1200–1600cc). This set is sized for a case bored 1.00 mm oversize, crank journals turned .25 mm under, and a 1.00 mm oversize thrust.

Sizing — Read Before You Order

MAHLE main bearings come in 9 combinations of case bore / crank journal / thrust. Pick the one that matches what your machine shop did to the case and crank. Mismatching any dimension turns an engine job into scrap — measure or check your work order before buying.

• Case bore size: 1.00 mm oversize
• Crank journal size: .25 mm under
• Thrust width: 1.00 mm oversize

Vehicle Fitment

• VW Beetle: All Years
• VW Super Beetle: All Years
• VW Bus (T1/T2): All Years
• VW Karmann Ghia: All Years
• VW Type 3: All Years
• VW Thing: All Years

Fits the Type 1 1200–1600cc engine across these models, plus Buggy, Baja, and any Type 1-based build.

Why Choose MAHLE?

MAHLE is one of the original OE bearing suppliers to Volkswagen — these are not aftermarket reproductions, but the same German-made bearings used in air-cooled engine builds for decades.

Key Features & Benefits

• Genuine MAHLE (Germany): OE-grade bearings, not aftermarket reproductions.
• Precise sizing: 1.00 mm oversize case, .25 mm under crank, 1.00 mm oversize thrust.
• Complete main bearing set: matched for a Type 1 1200–1600cc build.

Technical Specifications

• EMPI Part #: 98-1830-B
• OE Reference: 111-198-483OS
• Manufacturer: MAHLE (Germany)
• Case Bore: 1.00 mm oversize
• Crank Journal: .25 mm under
• Thrust Width: 1.00 mm oversize
• Engine: VW Type 1 1200–1600cc air-cooled

Frequently Asked Questions

• How do I know this is the right set? Match the case bore, crank journal, and thrust to what your machine shop cut. This set is 1.00 mm oversize case / .25 mm under crank / 1.00 mm oversize thrust.
• Are these genuine MAHLE? Yes — German-made MAHLE, an original OE bearing supplier to Volkswagen, not an aftermarket reproduction.
• Which engines does it fit? The VW Type 1 1200–1600cc air-cooled engine used across Beetle, Super Beetle, Bus, Karmann Ghia, Type 3, Thing, and Type 1-based builds.

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