Bosch WR8AC Spark Plug | VW Type 1 Air-Cooled | 14mm, 3/4" Reach, Standard Heat Range (98-9932-B)

Bosch WR8AC Spark Plug — VW Type 1 Air-Cooled (14mm, 3/4" Reach, Standard Heat Range)

Genuine Bosch WR8AC spark plug — the standard heat-range plug for VW Type 1 air-cooled engines. 14 mm thread, 3/4" reach. Bosch's superseded Super Plus equivalent (7902 / WR8AC).

Vehicle Fitment

• VW Type 1 air-cooled engine (Beetle, Bus, Karmann Ghia, Thing, Type 3): standard heat range, for stock and mildly built engines

Why Choose Bosch?

Bosch is the original OE supplier of ignition components to Volkswagen. These are not aftermarket reproductions — they are the same plugs that have been firing VW air-cooled engines since the cars rolled off the line.

Key Features & Benefits

• Standard heat range: suited to stock and mildly built engines.
• Correct thread and reach: 14 mm thread, 3/4" reach for the Type 1 head.
• Genuine Bosch: superseded Super Plus equivalent (7902 / WR8AC).

Technical Specifications

• EMPI Part #: 98-9932-B
• Bosch Reference: 7902 / WR8AC
• Thread: 14 mm
• Reach: 3/4"
• Heat range: Standard
• Sold: Individually (qty 4 for a stock 4-cylinder)

Frequently Asked Questions

• How many plugs do I need? Sold individually — order a quantity of 4 for a stock 4-cylinder engine.
• What heat range is this? Standard heat range, suitable for stock and mildly built Type 1 engines.

Explore Related Categories

Ignition, All Air-Cooled VW, and Bosch