QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 10" Tall - 500 lb. RU003003XL 9 wideband to relay AFR

9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control

1997-2001 Ford E-250 Econoline

2005-2014 Ford Mustang

Bert Second Generation Transmissions

QA1 High Travel Coil-Over Spring - 2-1/2" I.D. x 10" Tall - 500 lb. RU003003XL 9 wideband to relay AFRPowder Coated, Chrome Appearing Silicon Manganese SteelAll QA1 springs are manufactured using the highest quality chrome silicone. This material offers high strength, consistency and longer life. Cold Wound Heat Treated Shot PeenedAll QA1 springs go through intensive manufacturing processes to ensure consistency, accuracy and durability. Squared EndsAll QA1 springs are ground at both ends to ensure straight, consistent and accurate operation.