Wehrli replaces the thin, leak-prone factory up pipe with a heavy-duty 2 in. pipe TIG welded from 11 ga stainless, with a stainless bellows that resists cracking.
Wehrli says the larger, better-flowing pipe helps spool and lowers exhaust temperatures.
This driver-side pipe works with any turbo setup, single or compound, and fits the LB7, LLY, LBZ, LMM and LML.
Duramax owners with a leaking factory driver up pipe.
| Engines / years | 6.6L Duramax LB7-LML, 2001-2016 |
|---|---|
| Pipe | 2 in., 11 ga stainless, TIG welded |
| Side | Driver |
| Manifolds | Factory or Wehrli billet WCF100363 |
| Certification | SEMA SC-WCF01-0189 (Wehrli listing) |
| Made in | USA |
| Shipping weight / box | 6 lb · 6 × 6 × 16 in |
Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.
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