Ignitions and Electrical› Charging Systems

True Amps

12V 140A Dual Battery Isolator Kit

$132.95

SKU: DBK12LRG-GMC

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The True Amps DBK12LRG-GMC is a 12V 140A dual battery isolator kit designed for GMC Sierra trucks. It features automatic smart battery management, ensuring your primary starting battery remains charged while an auxiliary battery powers accessories.

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

BrandTrue Amps
Part NumberDBK12LRG-GMC
CategoryIgnitions and Electrical

Buy with Confidence

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