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Ships within 48 hours · Estimated delivery Oct 13 - Oct 18
The XDP Performance Valve Springs & Retainer Kit XD389 features a conical design that offers improved valve control over a basic straight spring
and capability your truck deserves with clearance for up to 34" tires
“heavy duty”
(10) Zip Ties
PPEI Transmission Tuning For 2020-2022 Ford 6.7L Powerstroke 2018-2023 Ford Expedition The XDP Performance Valve SpringsExtend your transmission life and increase your fuel economy with PPEI Transmission tuning! A MUST for tuned trucks with additional torque. The refined shift points get rid of the low rpm Lazy feel these trucks have that force the driver to stab the throttle for a downshift not cool and a fuel economy killer! For vehicles with larger turbochargers, ppei transmission tuning is a must to get the engine back into a rpm range to match the torque curve of
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