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Genuine OEM 2123201530 - Suspension Shock Absorber (Rear Left)
Product Overview
This Genuine OEM 2123201530 rear left shock absorber is engineered to factory specifications for Mercedes-Benz E550 models (W212 chassis) from 2010 to 2014. As an original equipment suspension component, it delivers the precise damping characteristics and ride quality that Mercedes-Benz designed into these luxury sedans. Whether your E550 is equipped with the 5.5L V8 or the later 4.7L V8 engine, this shock absorber restores confident handling and a smooth ride on city streets and highways alike.
This shock absorber is sold individually. Order quantity 2 for a complete rear axle service.
Symptoms of a Failing Shock Absorber
- Excessive bouncing or oscillation after hitting bumps or dips
- Vehicle sagging on one side, especially noticeable when parked
- Uneven tire wear or cupping on the rear tires
- Reduced stability during cornering or lane changes
- Clunking or rattling sounds from the rear suspension over rough roads
- Increased stopping distance or brake fade during hard braking
Cross Reference Numbers
This Genuine OEM 2123201530 is equivalent to or replaces the following part numbers: 212-320-15-30, 2123201530.
Vehicle Compatibility
This part fits the popular models below. For Fitment Confidence, please use the vehicle selector tool above to verify exact compatibility for your vehicle.
- Mercedes-Benz E550 5.5L V8 Gas (W212): 2010–2011
- Mercedes-Benz E550 4.7L V8 Gas (W212): 2012–2014
- Mercedes-Benz E550 4MATIC 5.5L V8 Gas (W212): 2010–2011
- Mercedes-Benz E550 4MATIC 4.7L V8 Gas (W212): 2012–2014
This may also fit other applications. Please use the vehicle selector tool to verify fitment.
Often Replaced Together
For a complete rear suspension repair, many owners replace the following at the same time:
- Rear right shock absorber (OEM 2123201630)
- Rear shock absorber mounts and bushings
- Rear sway bar links
- Rear brake pads and rotors
Why Shop at eEuroparts.com?
- Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
- Fitment Confidence: Our accurate cataloging ensures you get the right part the first time, backed by our fitment guarantee.
- Fast, Reliable Shipping: Most in-stock orders ship the same or next business day from our U.S.-based warehouse.
- Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
- Exclusive Kits That Fitâ„¢: Complete repair solutions with no guesswork.
- Established Trust: Serving the European car community since 2000.
Frequently Asked Questions
How do I know if my Mercedes-Benz E550 W212 needs a new rear shock absorber?
Common signs include excessive bouncing after bumps, a sagging rear end, uneven tire wear, or clunking noises from the rear suspension. If the vehicle feels less stable during cornering or takes longer to stop, a worn shock may be contributing to the issue. A visual inspection can reveal leaking fluid or visible damage to the shock body.
Do I need to replace both rear shocks at the same time?
Yes. Shock absorbers wear as a pair. Replacing only one side leaves the opposite side to continue deteriorating, creating an unbalanced suspension that compromises handling and safety. A complete rear axle service uses two shocks.
What is the difference between this OEM shock and an aftermarket alternative?
Genuine OEM shocks are built to Mercedes-Benz factory specifications and tuned to match the exact suspension geometry, spring rates, and weight distribution of your E550. They carry the manufacturer's warranty and ensure consistent ride quality and handling. Aftermarket shocks may offer cost savings but often lack the precision calibration that luxury vehicles demand.
How long does a shock absorber replacement take, and what tools do I need?
A rear shock replacement typically requires a floor jack, jack stands, a torque wrench, and a basic socket set. The job usually takes 1 to 2 hours per side for a competent DIYer, though professional technicians may complete both sides in under an hour. Always consult your service manual for exact torque specifications and suspension geometry procedures.
Should I replace any other suspension components when I install new shocks?
It is wise to inspect the shock mounts, bushings, sway bar links, and control arm bushings while the suspension is apart. Worn bushings and mounts can reduce the effectiveness of new shocks and lead to premature wear. Many shops recommend replacing these companion parts during a shock service to ensure a complete, long-lasting repair.
What is the expected lifespan of a shock absorber on a Mercedes-Benz E550?
Genuine OEM shocks typically provide 50,000 to 80,000 miles of service under normal driving conditions. Aggressive driving, poor road conditions, or heavy loads can reduce lifespan. Regular suspension inspections at service intervals help catch wear early and prevent damage to other components.
Order Genuine OEM 2123201530 today. In-stock orders ship same or next business day from our U.S. warehouse, and our fitment team is one call away if you need help confirming the right part for your Mercedes-Benz E550.
Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.
- BrandGenuine OEM
- ManufacturerGenuine OEM
- MPN2123201530
- Part TypeSuspension Shock Absorber
- PositionRear Left
- OE Part Numbers212-320-15-30, 2123201530
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2011 | Mercedes-Benz | E550 | 4Matic (5.5 V8 GAS) | |
| 2011 | Mercedes-Benz | E550 | Base (5.5 V8 GAS) | Engine: 273.971 |
| 2012 | Mercedes-Benz | E550 | 4Matic (4.7 V8 GAS) | Notes: Air suspension system |
| 2010 | Mercedes-Benz | E550 | 4Matic (5.5 V8 GAS) | |
| 2010 | Mercedes-Benz | E550 | Base (5.5 V8 GAS) | Engine: 273.971 |
| 2013 | Mercedes-Benz | E550 | 4Matic (4.7 V8 GAS) | Notes: Air suspension system |
| 2014 | Mercedes-Benz | E550 | 4Matic (4.7 V8 GAS) | Notes: Air suspension system |
Warranty Overview
At eEuroparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.
Standard Warranty – Most Parts
Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.
Protection: Defects in materials or workmanship under normal personal use.
Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.
Exclusions:
Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)
Commercial, fleet, rideshare, off-road, or racing use
Improper installation, misuse, accidents, or modifications
Not Covered: Labor, shipping, towing, or incidental costs.
Bison Performance Warranty – Our House Brand
Coverage: Limited Lifetime Warranty for as long as you own your vehicle.
Applies To: All products sold under the Bison Performance label.
Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.
Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).
What’s Included: Replacement of the defective product (labor and shipping excluded).
Warranty Claim Requirements
To keep claims fast and fair, we require:
Proof of purchase (invoice or order confirmation).
Photos or videos showing the defective part, order number, date, VIN, and odometer reading.
Diagnostic reports or part returns for non-visible issues may be requested.
Claims must be truthful, properly documented, and reflect normal consumer use.
Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.
For full details and exclusions, please see our complete Warranty Terms & Conditions.
This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.
Return Policy Overview
Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
To start a return, contact customer support via Chat or Contact Us.
Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)
Refunds: Issued to your original payment method within 3–5 business days after inspection
Exchanges: Not automatic — please return and reorder
Replacements: May be approved for incorrect or defective items reported within 7 days
Not returnable:
Used or installed parts
Electrical components
Opened filter kits, gaskets, or contaminated items
Final sale or custom orders
Important Notes:
Return shipping is your responsibility unless we made a verified error
Fitment is the customer’s responsibility (we can assist, but do not guarantee)
Country of origin may vary and is not grounds for return
For complete details, please see our full Return Policy.
This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.
Fast, Reliable Shipping — Straight to Your Door
We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.
We use trusted carriers like UPS, FedEx, and USPS.
Tracking info is emailed to you as soon as your order ships.
Delivery estimates at checkout are based on carrier data, but not guaranteed.
Need help with a shipment?
If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.
For complete details, please see our full Shipping Policy.
This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.
