
E24 Exhaust

Dyno tested, deep sport sound, but measured in decibels, no louder than stock. Free flowing, premium construction with stainless steel baffles and dual 76mm stainless steel tips. Three year unlimited mileage warranty.
635 Auto or manual transmission P/N 18815635
Installation Kit (not required, but includes all gaskets, seals, hangers and copper nuts for a professional installation) P/N 18815635KIT
Korman-Stahl Headers
These high quality headers provide a 6-10% power increase on stock engines, much more on high performance engines. Engineered for trouble free fit and long service. Also available with ceramic thermal barrier coating (described below) for additional performance, durability and improved appearance. Headers fit manual transmission models only and include oxygen sensor fitting.
| BMW | Primary Size | P/N |
| 633 9/79-9/82 | 1 3/8" | 18216138L |
| 633 9/82> | 1 3/8" | 18215138LF3 |
| 635 | 1 3/8" | 18216638L |
Exhaust Manifold Porting
A careful porting and polishing of the exhaust manifolds. We then precisely mate the exhaust manifold gaskets to the exhaust manifold for maximum flow. Especially effective with Ceramic Thermal Barrier Coating. An excellent alternative where headers are not an option.
All 6 cylinder P/N LAB18213006
Ceramic Thermal Barrier Coating
From Aerospace technology comes this oven baked metallic/ceramic finish that is far superior to ordinary header paints. In salt spray testing where high temperature paints lasted 40-50 hours, the ceramic coating lasted over 5,000 hours. The ceramic thermal barrier finish also coats the inside of the pipe. The thermal barrier will reduce underhood temperatures and testing has shown horsepower gains due to combustion chamber stabilization and increased gas velocity.
All 6 cylinder P/N 182110016

© Korman Autoworks, Inc. 1999