2012 Ram 1500 is still DS 4th gen, but 5-lug vs 8-lug changes the lower arms, inners, and some hubs. 4×4 press-in lowers match the later trucks. This is not a 2019+ 5th-gen DT, Rebel, or TRX, and it is not Ram 2500/3500 solid-axle steering.
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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2012 Ram 1500 front suspension
Ball joints
- Upper, 5-lug (adjustable, ±2.25°): K100316
- Upper, 5-lug Problem Solver (±3°, greaseable): K100115
- Lower, press-in, 4×4: K500286
- Lower, 4×2 (2012: 5-lug): K7411
Control arm bushings
- At shock (split, 4×4): K200688
- Lower rear (4×4): K200184
- Lower front (4×4): K200185
- Upper kit (8-lug): K200115
- Lower (4×2, 8-lug): K200114
Control arms with ball joint
- Lower, 4×4: left RK641504, right RK621602
- Upper, forged: left RK620634, right RK621897
- Lower, 4×2 5-lug: left RK621606, right RK621605
- Lower, 4×2 8-lug: left RK621265, right RK621264
- Upper, 8-lug: CK620181 or R-Series RK620181
- 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, 4×4: K80894
- Sway bar link, 4×2 optional: K7400
- Sway bar link, 4×2: K750157
- Sway bar repair bushing kit: K7300
- Wheel hub: 515151
2012 Ram 1500 steering
2012 Ram 1500 rear suspension
- Upper control arm: RK642211
- Lower control arm: RK643104
- Rear sway bar link: K750396
- Track bar: RK661215
Fitment notes
These Moog numbers come from the 2007–2018 catalog’s Ram 1500 DS rows that include 2012. 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 2012 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