Package Contains 1 Air Coil
You'll be getting one air coil.Bilstein
B3 OE Replacement Air Coil Spring
37-133719
$59.00
$93.00
Coupon Code Available
Estimated Delivery in 8-12 weeks
Bilstein
B3 OE Replacement Air Coil Spring
37-133719
$59.00
$93.00
Coupon Code Available
Estimated Delivery in 8-12 weeks
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Part Numbers & Details
Bilstein Limited Lifetime Warranty
Manufacturer Warranty protects against defects and premature failure.Important Fitment Note
Includes only spring and does not include any other hardware.Specifications
| Part Number | Lift/Lowered | Position | Item | Quantity | Color | Finish |
|---|---|---|---|---|---|---|
| 37-133719 | Factory | Front | Air Coil | 1 | Black | Black Powder Coat |
Product Details
Bilstein B3 OE Replacement coil springs are designed to replace your vehicle's original springs. These coil springs are manufactured to meet all the OE dimensions, spring rates, and design types (such as miniblock or central force design). With Bilstein B3 OE Replacement coil springs, you are restoring your vehicle's suspension system function and safety to factory specifications.
Compatibility List
| Year | Make | Model | Drive | Position |
| 2005 | Mercedes-Benz | C230 | Front | |
| 2004 | Mercedes-Benz | C230 | Front | |
| 2003 | Mercedes-Benz | C230 | Front |
Shock Surplus handles Bilstein's warranty claims; if you encounter a product defect please submit a warranty claim.
View Bilstein Warranty Information
For more information: View the Shock Surplus Warranty Policy.
Shipping Info
Free Shipping on most orders to the lower 48 U.S. states. Truck freight items (over 100 lbs) and custom orders require a separate shipping quote.
- Applies to items like axles, leaf springs, and long-travel kits.
- No international shipping on freight items — only to U.S.-based freight forwarders.
- Worldwide shipping available: Canada, Europe, UAE, Australia, and most of Asia.
Contact us for an international shipping quote.
Returns & Exchanges
30-Day Return Policy — Items must be new, unused, uninstalled, and include all original hardware.
- No restocking fees for exchanges or gift card credit.
- 10% restocking fee on refunds, returns cost us real money, so the 10% helps keep the lights on.
- Installed, damaged, or dirty parts cannot be returned.
- Any returns missing hardware or miscellaneous items, the return will be denied and returned to the buyer at the buyer's expense.
Return Shipping Responsibility
CHECKOUT+ Package and Order Protection plan provides prepaid return labels for any returned packages, this fee varies by product.
- Our mistake (misboxed, wrong item, damaged): We cover the cost of return shipping.
- Buyer mistake (wrong item ordered, fitment error, changed mind): Return shipping is the buyer's responsibility - unless CHECKOUT+ Package Protection has been purchased.
- Under 50 lbs: Discounted carrier rate
- Over 50 lbs: Discounted carrier rate + $25 oversize fee
Refunds
Refunds are issued within 5–7 business days of receiving your return.
- Funds typically post to your account in 1–3 business days depending on your payment method.
- There is a 10% restocking fee on all refunds. We don’t get our original shipping, labor, or transaction fees back — so the 10% restocking fee keeps the lights on.
- You will receive an email once your refund is processed.
International Orders
- All international orders are final sale.
- Returns via freight forwarders only accepted if the product hasn’t left the U.S.
- Import taxes, duties, and other possible import-related fees are the buyer’s responsibility and not included in our shipping charges.
- We are not responsible for goods once exported outside the U.S.
Product Details
Whether you want to upgrade, add a reservoir, or find something more affordable, contact us with any questions!
Part Numbers & Details
View full product specifications
Warranty
View warranty coverage
Shipping & Returns
Free shipping within the lower 48 United States
