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).
High-quality stainless steel sensor, accurate to within +/- 1% Full Scale over -40C to 105C - Includes repeatability, hysteresis and linearity
*General fitment MAP sensor for performance forced induction applications - Not direct fit, modifications may be necessary for install*
Brand:
ES#:
3980550
Mfg#:
30-2130-50
In Stock at Vendor
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$200.99
This product was last offered at the strikethrough price on 09-22-2026
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.
Brand:
ES#:
4389654
Mfg#:
GBX55
Ships in 8 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 09-22-2026
Includes connector housing with terminals and seals. Great for an OE replacement or custom upgrades.
10X Entries Into Our F80 M3 Sweepstakes Please reference original part number from existing connector to confirm fitment, prior to ordering. *OEM
Brand:
ES#:
4460527
Mfg#:
8E0973703B-KIT
In Stock
ON SALE!
SAVE 86%
$25.99
This product was last offered at the strikethrough price on 05-02-2026
Includes connector housing with terminals and seals. Bosch style connector used in various positions on the cars.
10X Entries Into Our F80 M3 Sweepstakes
Brand:
ES#:
4875873
Mfg#:
LK2M
In Stock
ON SALE!
SAVE 29%
$6.99
This product was last offered at the strikethrough price on 06-13-2026
This compact, 12V spark-proof jump starter is great for jumping gas vehicles with a 7.0L engine or less and diesel vehicles up to 4.5L, up to 30 times on a single charge.
Brand:
ES#:
4336378
Mfg#:
GB50
Ships in 8 Business Days
21% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$189.99
This product was last offered at the strikethrough price on 09-22-2026
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
