moog-rk621801 | Rear Upper Rearward Control Arm | 07-08 Ford Expedition

  • moog-rk621801 Rear Upper Control Arm and Ball Joint - Rearward Position
  • moog-rk621801 Rear Upper Control Arm and Ball Joint - Rearward Position
  • moog-rk621801 Rear Upper Control Arm and Ball Joint - Rearward Position

Rear Upper Control Arm and Ball Joint - Rearward Position

Manufacturer: MOOG
Part Number: moog-rk621801
Price: $56.03

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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 and Ball Joint - Rearward Position moog-rk621801 fits these vehicles:

moog-rk621801 | Rear Upper Rearward Control Arm | 07-08 Ford Expedition

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. Many of 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-rk621801

Product Reviews for moog-rk621801 | Rear Upper Rearward Control Arm | 07-08 Ford Expedition

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MOOG moog-rk621801

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


starstarstarstarstar_border" Good quality but poor fit "

I have always trusted Moog parts and this seems to be really good quality. However, the fit isnt that great. Maybe Im doing something wrong but this is 1/8" shorter than the OEM I took off and as such it change my camber quite a bit. It is threaded as if it can be adjusted but I mounted it in a vice and used very large wrenches and could not turn it no matter how hard I tried. I believe they must have crimped it in place and so it wont adjust. After installing it the camber is now at the max allowed so I suppose its still good? However, I would have liked to have been able to adjust the camber back to where it started. Because of this link being short and not adjustable it also required me to adjust the tow after installation. So, if you use this link plan on having to do an alignment afterwards. Editors Note: After any steering or suspension part is replaced an alignment has to be done. If your vehicle is high mileage and replacing one part the alignment could be at the end of the adjustment.

verified_user Verified Buyer - - . MOOG moog-rk621801 - 4 out of 5
Fitment for moog-rk621801

question_answer Customer Questions and Answers

What is the length of moog-rk621801? is the driver side the same length as the passenger side?
The driver side and passenger side are the same. The length is 14.460 inches, it is the same number for both sides.