These 1-1/2" Performance Heater Boxes by Jopex/Dansk (Europe) are the ideal upgrade for performance engines that still need functional cabin heat and defrost. Built from heavy-gauge tubing with welded flanges, these heater boxes flow better than stock while maintaining reliable warm-air output. Perfect for street-driven engines running a flanged header system.

Fitment
• Type 1 Beetle & Karmann Ghia: 1963–1974
• Type 2 Bus (upright 1600cc engines): 1963–1971
• Engines based on 1500–1600cc Type-1 platform (stock or performance)
• Designed for use with flanged exhaust systems (1-1/2")

Features
• Genuine Jopex/Dansk (European manufacture)
• 1-1/2" heavy-gauge tubing for increased exhaust flow
• Flanged outlets – pairs perfectly with CB Pro-Flow & other flanged headers
• Lightweight performance core (no cast-aluminum fins like OEM boxes)
• Provides dependable cabin heat and windshield defrost
• Excellent choice for mild-to-hot street engines needing heat retention
• Direct bolt-on replacement for factory heater boxes

Notes
• Heat output is suitable for street use, though not as strong as OEM fin-core boxes
• Some non-CB flanged headers may require minor flange alignment modifications
• Hardware kit sold separately: CB #3687
• Reference OE numbers (left/right): 043-255-107-D / 043-255-108-D