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The brand behind your
Suspension Control Arm and Ball Joint Assembly
Moog builds this Suspension Control Arm and Ball Joint Assembly to original-equipment standards.
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We do not list every part on earth — just the brands automakers actually trust. And we use AI to double-check not just the fitment but the product details on every listing, because we hate buying the wrong part as much as you do.
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Front Left Upper Suspension Control Arm and Ball Joint Assembly | MOOG RK623921 Fits Mercedes-Benz
Guaranteed fit or free return
Front Left Upper Suspension Control Arm and Ball Joint Assembly | MOOG RK623921 Fits Mercedes-Benz
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About This Suspension Control Arm and Ball Joint Assembly
This MOOG automotive component is engineered to meet or exceed OEM specifications for reliable performance and long service life.
Key Features
- Meets or exceeds OEM specifications
- Direct-fit replacement design
- Rigorously tested for durability
- Professional-grade construction
- Backed by manufacturer warranty
Signs This Part Needs Replacement
- •Unusual noises from the component area
- •Decreased vehicle performance
- •Warning lights on dashboard
- •Visible wear or damage
- •Failed vehicle inspection
MOOG
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MOOG is a trusted manufacturer of quality automotive parts.
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The brand behind your
Suspension Control Arm and Ball Joint Assembly
Moog builds this Suspension Control Arm and Ball Joint Assembly to original-equipment standards.
The Moog Suspension Control Arm and Ball Joint Assembly (RK623921) is a direct-fit replacement for 2014-2021 Mercedes-Benz vehicles. It cross-references 2223300507, 2173303900, CB28237PR, CB28237, CMS101455. In stock and ships free.
About This Product
Suspension Control Arm and Ball Joint Assembly
The Moog Suspension Control Arm and Ball Joint Assembly (RK623921) is a direct-fit replacement for 2014-2021 Mercedes-Benz vehicles. It cross-references 2223300507, 2173303900, CB28237PR, CB28237, CMS101455. In stock and ships free.
This MOOG automotive component is engineered to meet or exceed OEM specifications for reliable performance and long service life.
Key Features
- Meets or exceeds OEM specifications
- Direct-fit replacement design
- Rigorously tested for durability
- Professional-grade construction
- Backed by manufacturer warranty
Signs This Part Needs Replacement
- Unusual noises from the component area
- Decreased vehicle performance
- Warning lights on dashboard
- Visible wear or damage
- Failed vehicle inspection
Brand-first. Fitment-obsessed.
We only sell brands automakers trust, and we double-check the fit on every listing.
Top curated brands only
The brands automakers put on the car.
Obsessed with fitment
Year, make, model, trim, engine, plus the fine print.
Search any part number
Your old part, a competitor, or the dealer #. We confirm the match.
Shop owner? Get BuffyPro business pricing
Fitment Obsessed
Every part checked against your exact year, make, model, trim, and engine.
Wrong Fit? On Us.
Free return shipping, no restocking fee — the fitment guarantee.
Brands OEMs Trust
The names automakers actually put on the car.
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If we say it fits, it fits.