Rear Control Arm - Jeep Compass - MOOG moog-rk100321

  • moog-rk100321 Rear Upper Control Arm
  • moog-rk100321 Rear Upper Control Arm

Rear Upper Control Arm

Manufacturer: MOOG
Part Number: moog-rk100321
Price: $137.39

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  • Moog fulfills their warranty through their individual dealers. That means that in order to receive warranty support, you will have to refer back to the original dealer you purchased the part from. Be sure to check the dealer's warranty support before you buy the part to make sure that they will properly support the warranty. If a dealer will only refer you back to the manufacturer in order to receive warranty support, then you may not actually have any warranty at all.


    Moog Premium Steering Components carry a Limited Lifetime Warranty. Moog R-Series Control Arms, Hub Assemblies, and Strut Assemblies carry a 3 Year Warranty.

    Moog warranties their parts to be free of defects in materials and/or workmanship during these timeframes as measured from the date of purchase.

    If a Moog part should fail due to materials or manufacturing defect while under warranty, we will provide a replacement of the part upon return of the defective part.

FitmentRear Upper Control Arm moog-rk100321 fits these vehicles:

Rear Control Arm - Jeep Compass - MOOG moog-rk100321

What is the Difference Between Moog R Series and CK Control Arms?

CK, K or RK? We here at Diverse Suspension Technologies get this question a whole lot. If you are putting parts on your vehicle, you want to know exactly what you are installing. It can be hard to do that with all of these letter designations. So here is all that you need to know to clear up the confusion.

Short Answer: R Series is a value-driven replacement part while the CK Series incorporates Moog's premium Problem Solver components for a better than OE upgrade.

Moog Stamped Arms
Moog Stamped Arms

CK (K): Moog Problem Solver

Starting with the CK and K. Whether you see a "K" designation or a "CK" designation, you are getting the same part. The CK and K are Moogs Premium line of control arms. Utilizing their "problem solver" technology, these control arms address common factory design issues providing a better than the original replacement for your vehicle. Most CK and K control arms include ball joints that are powder coated metal with gusher bearings giving them a long life. These ball joints are serviceable and have grease fittings. The CK and K arms also have problem solver bushings and a precise fit and form for easy installation.

RK: Moog R Series

The RK series is a more value-driven part. Because there are so many different vehicles both foreign and domestic, Moog has introduced the R-Series arms to provide replacements for a wide range of vehicles. The RK arms have OE fit and form geometry alignment, with pre-installed OE style bushings and most include the ball joints. However, these ball joints are not serviceable like the CK arms. All of the R Series arms have Moog validated construction and design, providing a less expensive alternative.

Moog Forged Arms
Moog Stamped Arms

Type and Warranty

Each line of control arms has Forged Steel, Stamped Steel, or Forged Aluminium arms to provide the best style for your specific vehicle. The Premium CK line has a limited lifetime warranty, and the RK has a 3 year warranty that are both handled through our awesome customer service team at DST. Whether you are looking for a "light on the wallet" OE replacement, or a "premium" control arm upgrade, Moog control arms are a great choice for your vehicle.

MOOG moog-rk100321

Product Reviews for Rear Control Arm - Jeep Compass - MOOG moog-rk100321

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MOOG moog-rk100321

4 out of 5 based on 1 user reviews. Write a Review


starstarstarstarstar_border" Very good prduct! "

I liked this product. Had a few problems shipping to Canada but customer service fixed every thing. Very good customer service! Just wished the shipping was faster for the price !!

verified_user Verified Buyer - Brandon Savoie - . MOOG moog-rk100321 - 4 out of 5
Fitment for moog-rk100321

question_answer Customer Questions and Answers

Is the moog-rk100321 adjustable?
Moog-rk100321 is adjustable. The camber adjustment range is + or - 2 degrees.

What is the difference between rk100114 vs rk100321?
Both rear arms are adjustable for camber. The main difference is the way the adjustment is made. The rk100114 adjustment is made by loosening 2 bolts and sliding the arm to adjust camber. The rk100321 is a turn buckle design. You loosen the jam nut a and turn the turn buckle to adjust camber. ...see more