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 11-02-2026
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 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 11-02-2026
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 9 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 11-02-2026
Replace your pesky OEM ignition coil tiedown studs with these stainless steel bolts and black titanium ZSPEC washers!
10X Entries Into Our F80 M3 Sweepstakes
Brand:
ES#:
4475713
Mfg#:
97646A327BLKT
In Stock
ON SALE!
SAVE 10%
$32.99
This product was last offered at the strikethrough price on 06-13-2026
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
