2015 is the last catalog year for the 4×4 ST8606 strut/spring/mount assembly (except air). Front numbers otherwise match 2013–2018 DS. Not a 2019+ 5th-gen DT, Rebel, or TRX.
4×4 and 4×2 air-suspension trucks share a lot of the front end. Coil-spring 4×2 uses different lower arms. A clunk at low speed is usually a ball joint or sway link. Wander or inner-edge tire wear is more often a tie rod or a worn control-arm bushing. Most people replace the control arm as a complete unit with the ball joint already pressed in.
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Other years: 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018
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2015 Ram 1500 front suspension
Ball joints
- Upper (adjustable, ±2.25° camber/caster): K100316
- Upper Problem Solver (±3°, greaseable): K100115
- Lower, press-in, 4×4 or 4×2 with air suspension: K500286
Control arm bushings
- At shock (split, 4×4 / 4×2 air): K200688
Control arms with ball joint
- Lower, 4×4 or 4×2 air: left RK641504, right RK621602
- Upper, forged, coil-spring: left RK620634, right RK621897
- Lower, 4×2 coil-spring: left RK623101, right RK623100
- Upper, stamped, air suspension: RK643074
Strut, sway bar, hub
- Strut/spring/mount assembly, 4×4 except air: ST8606
- Strut bumper bellows, 4×4 except air: K201301
- Strut bushing, lower, 4×4: K160326
- Strut mount with spring seat, 4×4 except air: K160196
- Sway bar to frame, 4×4, 32mm improved: K201621 or standard K7353
- Sway bar to frame, 4×4, 36.8mm: K7384
- Sway bar link: K80894
- Wheel hub: 515151
2015 Ram 1500 steering
2015 Ram 1500 rear suspension
Fitment notes
These Moog numbers come from the 2007–2018 catalog’s Ram 1500 DS rows that include 2015. Do not use them on a 2019+ 5th-gen (DT) Ram 1500 unless it is a Classic. Measure the sway-bar diameter before ordering the frame bushing (32mm vs 36.8mm).
Diagrams for figures F335, F338, F339, F600, S094, and S322 are on the Ram 1500 catalog page. Related: how to diagnose suspension noises. The 2020 Ram 1500 5-inch lift kit is a different generation (DT), not this 2015 DS truck.
Leave a comment with 4×2 vs 4×4, coil vs air, and the noise if you want a part-number check. #HAPPYMOTORING