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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.
Part of our warranty process includes reviewing evidence of the defect provided by the customer. This is easily accomplished by providing video or images of the defective part so our staff can verify the claim and move forward with the warranty process. This removes the necessity of shipping the part back to our facility at the customer's expense.
WARRANTY:
Moog Premium Steering Components carry a Limited Lifetime Warranty. Moog R-Series Control Arms, Hub Assemblies, and Knuckle Assemblies carry a 3 Year or 36,000 mile Warranty (whichever occurs first). Above warranties are based on customers who own a car, van, SUV or light truck (less than 8,000 lbs. or 3,625 kilograms).
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.)
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.


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, not all RK series ball joints are serviceable like the CK arms. All of the R Series arms have Moog validated construction and design, providing a less expensive alternative.


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.

Product Reviews for Front Lower Control Arm Assembly | 2007-2016 GMC Yukon
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MOOG moog-ck620955
starstarstar_borderstar_borderstar_border" Review 1 Year Later "
Had to replace this whole assembly 3 months ago due to too much play within where the control arm connects to the body of the truck. Wasnt too pleased to have to pay for another one. Is what it is I guess though.
verified_user Verified Buyer - Dale A Young - . MOOG moog-ck620955 - 2 out of 5question_answer Customer Questions and Answers
- Question:
- Can I mix the ck upper a arm with a rk lower control arms?
- Answer:
- Yes, you may mix the CK upper control arms with the RK lower control arms.
- Question:
- I just bought installed the Front lower control arms for my truck [Moog-CK6209556 and Moog-CK620956 and the upppers as well] and after I took the car in for an alignment and inspection I was told that the lower control arm ball Joints did not have the rubber boots and that they should be on there or they might fail with dirt and crap getting in the Ball Joints. When I bought these I thought they would come with everything. IS there such a part or was I just misinformed?
- Answer:
- Yes, part number moog-ck620955 comes with an integral ball joint dust boot. The ball joint does not have an external dust boot. The integral dust boot seals much better.
- Question:
- Do the control arm come with the mounting bolts to attach to frame of truck.
- Answer:
- Moog-ck620955 does not include the hardware. You would have to reuse the OEM hardware or purchase new hardware.
- Question:
- Are the ball joints adjustable?
- Answer:
- moog-ck620955 lower control arm does not have an adjustable ball joint.
- Question:
- Do you offer replacement bushing for lower control arm Moog ck620955?
- Answer:
- At this time Moog only has the upper control arm bushings.
- Question:
- What ball joint is in the CK620955?
- Answer:
- On part number moog-ck620955 the ball joint that is used is part number moog-k6541.