This 4 in. downpipe is for Cummins trucks that mount an S400 turbo up high, using a second-gen style manifold. Its top flange is 4.6 in. diameter to match the S400 exhaust housing.
At the bottom it meets the V-band flange on the stock exhaust, using the stock clamp. It is high-temperature ceramic coated and comes with heat wrap and clamps.
Cummins owners with a high-mount S400 swap.
| Turbo | S400, high-mount on 2nd-gen-style manifold |
|---|---|
| Upper flange | 4.6 in. diameter |
| Lower connection | Factory V-band flange and clamp |
| Turbo clamp | 4 in. V-band (included) |
| Finish | High-temp ceramic coat |
| Shipping weight / box | 10 lb · 20 × 8 × 8 in |
Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.
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