Bosch Blue 12V Ignition Coil with Bracket | VW 1967+ Air-Cooled | 3.4 Ohm Epoxy-Filled (00-9409-B)

Bosch Blue 12V Ignition Coil with Bracket | 3.4 Ohm, Epoxy-Filled | VW Air-Cooled (#00-9409-B)

Genuine Bosch Blue ignition coil with factory-style mounting bracket — 12 volt, 3.4 ohm primary resistance, epoxy-filled, boxed. The classic period-correct ignition coil for restored 12V air-cooled VWs and other vintage European vehicles. EMPI part #00-9409-B.

This is the modern epoxy-filled production — sealed, durable, and mountable in any orientation. The bracket is included so you have everything needed to replace a tired or non-functional original.

Vehicle Fitment

• VW Beetle: 1967-1979 (factory 12V)
• VW Karmann Ghia: 1967-1974
• VW Type 3: 1967-1973
• VW Bus / Transporter: 1967 onward
• VW Thing (Type 181): 1973-1974
• 6V-to-12V conversions: Air-cooled VWs converted to 12V electrical.
• Other 12V vehicles: Vintage Porsche, BMW, Mercedes, and other 12V points-ignition cars.

Will NOT work for: 6-volt electrical systems — use a 6V coil instead (for original-spec 1966 and earlier VWs).

Why Choose Bosch?

Bosch Blue coils have been the standard 12V ignition coil for air-cooled VWs since the first 12V cars in 1967. The distinctive blue casing, period-correct shape, and Bosch quality made it the OE choice for VW and the long-standing first call for restorers. For a numbers-correct restoration, the Bosch Blue is the right coil.

Key Features & Benefits

• Period-Correct: OE-style blue casing and shape for numbers-correct restorations.
• Epoxy-Filled: Sealed and durable — mount in any orientation.
• Bracket Included: Factory-pattern mounting bracket.
• 12V / 3.4 Ohm: Correct spec for 12V points ignition systems.

Technical Specifications

• Voltage: 12 volts
• Primary Resistance: 3.4 ohms
• Construction: Epoxy filled (sealed, any orientation)
• Color: Blue
• Brand: Bosch (German OE supplier)
• Bracket: Included
• Packaging: Boxed (factory packaging)
• Part Number: 00-9409-B

Frequently Asked Questions

• Bosch Blue vs Beru Blue — which should I get? Functionally equivalent. Both are 12V German-brand 3.4–3.5 ohm coils. Bosch was the OE supplier on VW; Beru is also period-correct on many German cars. Either is correct for a restored air-cooled VW.
• Bosch Blue vs Bosch Black — which is better? For numbers-correct restorations, the Blue is the period-correct choice. The Black is a newer high-energy design with a slightly hotter spark — better for a daily-driven or performance application.
• Can I mount it upside down? Yes. This is an epoxy-filled coil with no orientation restrictions.
• Is this the same coil that came on my 1973 Beetle from the factory? Functionally identical. The original 1973 factory coils were oil-filled rather than epoxy-filled, but the modern Bosch Blue is the direct replacement and uses the same housing color, mounting pattern, and electrical specs.
• What's the bracket for? The bracket mounts the coil to the engine fan shroud (on most air-cooled VWs) or to the firewall (on some installations), matching the factory Bosch mounting pattern.

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