Description
4PCS Front Lower Control Arms for 2007-2014 Mercedes-Benz W204 C-Class (RWD Only)
This 4-piece front lower control arm set provides a complete refresh of the lower suspension on RWD Mercedes-Benz W204 platform vehicles. Includes both forward and rearward arms for both sides with pre-installed rubber bushings and sealed ball joints. Designed specifically for rear-wheel-drive models — restores factory handling precision, eliminates clunks, and corrects alignment-related tire wear on C250, C300, C350, and C63 AMG models.
Kit Contents
| Position |
iFJF Part # |
OE Reference |
| Front Driver Lower Rearward |
X31CJ2412 |
2043306711 / 2043303111 |
| Front Passenger Lower Rearward |
X31CJ2411 |
2043306811 / 2043303211 |
| Front Driver Lower Forward |
X31CJ6867 |
SK520953 |
| Front Passenger Lower Forward |
X31CJ6866 |
SK520954 |
Compatibility (RWD Only — NOT for 4Matic)
| Model |
Engine |
Years |
Chassis |
| C250 |
1.8L L4 Turbo (M271) |
2012-2014 |
W204 |
| C300 |
3.0L V6 (M272) |
2008-2011 |
W204 |
| C350 |
3.5L V6 (M272/M276) |
2007-2014 |
W204 |
| C63 AMG |
6.3L V8 (M156) |
2008-2014 |
W204 |
| C280 |
3.0L V6 (M272) |
2007 |
W204 |
⚠️ IMPORTANT: Will NOT fit 4Matic (AWD) models. 4Matic W204 models use a different front suspension geometry with unique control arm part numbers.
Key Features
-
Forged Steel Construction: Meets or exceeds Mercedes-Benz OEM strength standards for the W204 platform
-
Pre-Installed Bushings: OEM-spec rubber bushings factory-installed — matched to factory durometer for NVH and handling balance
-
Sealed Ball Joints: Pre-greased, maintenance-free ball joints — no zerk fittings to service
-
Complete Hardware Kit: All mounting bolts, nuts, and washers included
-
E-Coated Finish: Corrosion-resistant coating for long service life in all climates
Why Replace All Four?
Control arm bushings on the W204 platform wear at very similar rates. Replacing all four arms simultaneously: (1) saves on alignment costs — you only pay once, (2) ensures consistent handling — no mixing of old worn bushings with new ones, (3) prevents premature wear of new components from being stressed by remaining worn parts.
Frequently Asked Questions
Q: Does this fit 4Matic (AWD) models?
A: No. This kit is exclusively for RWD W204 models. 4Matic C-Class vehicles use different front lower control arms with unique geometry. Verify your drivetrain before ordering.
Q: Are these pre-greased and ready to install?
A: Yes. All ball joints come factory pre-greased and permanently sealed. No additional lubrication is needed — bolt on and go.
Q: Do I need new hardware?
A: The kit includes all necessary mounting hardware (bolts, nuts, washers). We recommend replacing hardware rather than reusing old fasteners for safety.
Q: Will an alignment be required after installation?
A: Yes. Professional 4-wheel alignment is mandatory after any control arm replacement. Budget $80-150 at a shop with Mercedes-Benz alignment experience.
Q: How long does installation take?
A: Professional mechanic: 2-3 hours. Experienced DIY with proper tools (ball joint separator, torque wrench): 3-4 hours per side. A lift makes the job significantly easier.
Q: What are the signs that my W204 needs new control arms?
A: Clunking over bumps, steering wander at highway speeds, uneven inner-edge tire wear, vibration through the steering wheel, and a loose or floaty front-end feel are all classic W204 control arm bushing failure symptoms.
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