Spelab

Coolant Overflow Tank with Billet Cap

$239.99

SKU: SPCS08915BK

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Spelab Coolant Reservoir Tank offers an upgrade for your factory coolant tank, providing a relocated position closer to the battery box to maximize engine compartment space. Its durable powder-coated finish adds scratch resistance and a sleek aesthetic. Key features include an integrated low coolant level sensor that seamlessly connects to the factory harness for accurate real-time monitoring. A billet anodized cap provides enhanced durability and a premium look, complemented by an overflow hose for proper system function and a sight glass for quick visual checks. This coolant reservoir is designed specifically for the 2011-2016 GMC/Chevrolet LML Sierra/Silverado 2500HD and 3500HD models equipped with the 6.6L Duramax Diesel engine. Installation is described as simple, with complete hardware included to facilitate a hassle-free process.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSpelab
Part NumberSPCS08915BK
CategoryHeating and Cooling

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

View Full Shipping Policy