Chevrolet Duramax LBZ Thermostat Housing Kit – Wehrli – Dual CP3 – Brizzle Blue – 06–10. This top‑outlet billet housing and upper coolant pipe cleans up routing on 2006–2010 LBZ/LMM trucks built around dual CP3 systems.

By replacing the factory upper radiator hose and coolant return pipe, flow is redirected upward and forward from the thermostat to improve access to driver‑side fuel components and create room for larger turbochargers. Engineered for WCFab Dual CP3s and compatible with dual alternators, it remains compatible with factory VGT turbos and is required for race cover or SXE turbos in the valley. Includes CNC‑machined billet upper housing, coolant pipe, silicone boots, and T‑bolt clamps. Not compatible with PPE dual fueler kits or 2006–2007 GMC Sierra.

Features

• Direct routing upgrade replaces OEM hose/return pipe
• CNC‑machined billet aluminum construction
• Works with WCFab Dual CP3; dual‑alternator friendly
• Factory VGT compatible; required for race cover/SXE in‑valley turbos
• Replaces GM PNs: 19330105, 15792824, 25833204, 97361881
• Fitment: 2006–2010 GM Duramax LBZ/LMM; Brizzle Blue

Have questions or planning a build? Call our Austin, TX or Los Angeles, CA area teams. We offer installation and customization at both locations: 512-982-9393 (TX), 562-981-6800 (CA).

Thinking about purchasing multiple items? Contact us for shipping discounts. We install on premises at both locations.

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