Bilstein Spring Black Powder Coat Finish - 37-171865 2007-2018 Jeep Wrangler JK Engineered from heavy-duty aluminized steel

Engineered from heavy-duty aluminized steel

an O-ring sealed idle mixture screw

The housing is made from aircraft-grade aluminum

Washer Finish: Anodize

Experience vastly improved air flow compared to factory intakes

Bilstein Spring Black Powder Coat Finish - 37-171865 2007-2018 Jeep Wrangler JK Engineered from heavy-duty aluminized steelFeatures & Benefits Innovative technical designs including pigtail ends, minibloc shapes and central force design High quality chrome vanadium or chrome silicon steel for superior break resistance Hot setting after forming effectively prevents height loss Bilstein B3 OE Replacement coil springs are designed to replace your vehicle's original springs. These coil springs are manufactured to meet all the OE dimensions, spring rates, and design types