Sinister Diesel 01-16 GM Duramax 6.6L Coolant Reservoir (Degas) Cap

SKU: SINSD-DC-DMAX-01

Engine Coolant Reservoir Cap

SIN Engine Bay Caps...

Sinister Diesel

Sinister Diesel 01-16 GM Duramax 6.6L Coolant Reservoir (Degas) Cap

SKU: SINSD-DC-DMAX-01

Engine Coolant Reservoir Cap

SIN Engine Bay Caps...

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

This new Coolant Reservoir (Degas) Cap functions like a factory cap, but features custom Sinister Diesel looks. The cap fits OEM or Sinister Diesel Coolant Reservoir for the 2001-2016 GM Duramax. It is made from CNC machined, solid billet T6-6061 aluminum with an interior pressure relief system, so it will continue to function even in case of a gasket failure. Available in gray or Sinister Blue, this cap looks as good as it works!., Features:Cap is rated for 15 PSI, Available in Anodized Sinister Blue or Gray, CNC Machined from T6-6061 Billet Aluminum, Etched Sinister Diesel Logo, Replacement for failure-prone factory cap, Fits 2001-2016 GM Duramax Coolant Reservoirs;Includes:(1) Sinister Diesel Coolant Reservoir Cap.

Application Summary

2001-2016 Chevy/GMC 2500; 3500; 6.6L

Part Type

Engine Coolant Reservoir Cap

Data: v4.2 - Upd: 2026-10-14 14:41:22

Specifications

Reference Information

Brand Name/s	Sinister Diesel
StreetFX SKU	sinSD-DC-DMAX-01
SFX Item ID	4134519
Supplier Item Code	4134519
Manufacturer SKU	SD-DC-DMAX-01
Manufacturer UPC	841788112444
Alternative References	6.6L