EMPI Ceramic Coated J-Tubes — The Clean Solution for Rotted Heater Boxes

When your stock VW heater boxes are beyond saving — cracked, rusted through, or simply missing — EMPI's ceramic coated J-Tubes offer a clean, permanent replacement that eliminates the problem entirely. These slip-joint pipes bolt directly into the exhaust ports where the heater boxes once lived, capping off the heating circuit with a smooth, finished look that looks factory-intentional. Sold as a pair (LH and RH), so you get everything needed in a single order.

Ceramic Coating: Long Life and Better Heat Management

The ceramic thermal barrier coating on each J-Tube serves a dual purpose. First, it dramatically reduces surface corrosion compared to raw steel — ceramic-coated exhaust components routinely outlast uncoated pieces by years, especially in climates with road salt or high humidity. Second, the coating helps retain exhaust heat within the pipe, which improves exhaust gas scavenging and maintains exhaust velocity for slightly better flow than a bare metal equivalent.

Unlike paint-coated alternatives that chip and rust at the first heat cycle, ceramic coating is baked on and chemically bonded — it doesn't peel, it doesn't flake, and it won't discolor dramatically after the first run.

Slip-Joint Installation

The slip-joint design means installation requires no welding and no special tools — just basic hand tools and the included gaskets. The joints slip over the exhaust ports and are secured with the existing clamps, making this a practical garage-build upgrade. Compatible with stock exhaust systems as well as aftermarket setups that retain the stock exhaust header port locations.

Fitment

• Volkswagen Type 1 Beetle / Super Beetle: 1955–1974
• Volkswagen Type 2 Bus: 1955–1971
• Volkswagen Karmann Ghia: 1956–1974
• Engine: 1300cc–1600cc Type 1 upright engines

What's Included

• LH J-Tube (1 pc)
• RH J-Tube (1 pc)
• Gaskets

Specifications

• SKU / Part Number: 55-3357-0
• Finish: Ceramic coated
• Weight: 3.75 lbs
• Box Dimensions: 24 × 6 × 4 in
• UPC: 707924244281
• Sold: Pair (LH + RH)