The MUS 4.3 POLAR (Part No. 56-958) has been specially developed to offer excellent all-around charging with special cold weather performance and adapted AC and DC cables to handle severe cold down to -22°F (-30°C).
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
X for Extreme - Boost X is the next generation in jump packs with an all-new design and more powerful jump starts. This 12V battery jumper will jump gas vehicles up to 7.5L and diesel engines up to 5.0L.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4389654
Mfg#:
GBX55
Ships in 9 Business Days
20% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$219.99
This product was last offered at the strikethrough price on 06-02-2026
Includes connector housing with terminals and seals. Bosch style connector used in various positions on the cars.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4875873
Mfg#:
LK2M
In Stock
ON SALE!
SAVE 20%
$5.99
This product was last offered at the strikethrough price on 05-02-2026
The CTEK storage bag is tough, durable, and lightweight to protect your battery tender and keep it safe from the elements – wherever you take it.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4492955
Mfg#:
40-468
In Stock
Limited Qty Sale
$87.99
This product was last offered at the strikethrough price on 05-02-2026
Easy to use — simply attach to the battery (no need to disconnect) and follow the on-screen instructions
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
With automotive electrical content growing yearly, it has never been more important to keep your charging and electrical system in top working condition. ECS Tuning stocks a huge and constantly growing inventory of electrical sensors, electric motors, and electronic actuators from original equipment and name-brand aftermarket suppliers.
Lifetime Replacement
