moog-rk640773 | Front Lower Control Arm | 1999-2004 Jeep Grand Cherokee

  • moog-rk640773 Front Lower Control Arm
  • moog-rk640773 Front Lower Control Arm

Front Lower Control Arm

Manufacturer: MOOG
Part Number: moog-rk640773
Price: $55.09

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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.

    Wearable RUBBER parts are not covered under warranty (Dust boots, bushings, bump stops, etc.)

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FitmentFront Lower Control Arm moog-rk640773 fits these vehicles:

moog-rk640773 | Front Lower Control Arm | 1999-2004 Jeep Grand Cherokee

For the upper use rk640797

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-rk640773

Product Reviews for moog-rk640773 | Front Lower Control Arm | 1999-2004 Jeep Grand Cherokee

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MOOG moog-rk640773

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


starstarstarstarstar" well built "

bought a set of rear lower control arms for my jeep Cherokee.\nforget what brand they were but they were china made.\nlong story short 2 months the were junk causing the rear axle to shift while driving (rear steering)\nbought a set or moog lower control arms non hd\nvery nice part 2wice the weight of the china made\nthicker gauge steel better looking bushings\ninstalled them all the problems are solved\nthanks again

verified_user Verified Buyer - - . MOOG moog-rk640773 - 5 out of 5
Fitment for moog-rk640773
MakeModelYear RangePositionDrive WheelQuantity RequiredEngine BaseEngine VINEngine Designation
JeepGrand Cherokee2004-1999Front Lower Quantity 2

question_answer Customer Questions and Answers

Just inherited this vehicle. I've been replacing every bushing in the rear. New control arms and linkage. I see the front control arm bushing is somewhat sloppy on the driver's side. Are the passenger and the driver's side the same part number?
Yes moog-rk640773 lower control arm will fit on the left and right sides.

Do your control arms come with the bushings pre-installed?
Yes the bushings are pre-installed. All you have to do is remove the worn out OEM arm and install the new Moog control arm. Then get an alignment performed.

Hello, I just want to confirm that your control arms come with bushings, and that the bushings are polyurethane.
MOOG-RK640773 does have the bushings included. Moog control arm bushings will be rubber not poly urethane.