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Details
| Specification | Value |
|---|---|
| Brand | MERTZ |
| MPN | m-s4021 |
| Fitting Position | Front Right |
| Fitting Position | Front Left |
| Inner Diameter [mm] | 18 mm |
OE numbers (4)
Where this part fits
Original-fit position for OE 350138. The red ring marks where this part installs on the vehicle.
About this product
MERTZ Mounting Stabiliser Bar (M-S4021) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Fitting Position: Front Right, Fitting Position: Front Left, Material: Copper, Inner Diameter [mm]: Composite mm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with OPEL vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 00501054, 03 50 138, 04377, 046152B and 78 more. Matching these numbers confirms a like-for-like replacement with no loss of function. MERTZ is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
Suitable cars
Equivalent products (80)
Show all 80 OE numbers
Mounting Stabiliser Bar MERTZ M-S4021 — compatible car models
| Car models | OPEL: ASTRA G CLASSIC Caravan (F35), ASTRA G CLASSIC Saloon (T98), ASTRA G Coupe (T98), ASTRA G Estate (T98), ASTRA G Estate Van (F70), ASTRA G Hatchback (T98), ASTRA G Saloon (T98), ASTRA H Estate Van (L70), TIGRA TwinTop (X04) |
|---|---|
| Engines | 1.4 (F35); 1.6 16V (F69); 1.6 16V (F07); 1.2 16V (F35); 1.4 (F70); 1.2 16V (F08, F48); 1.2 16V (F69); 1.7 CDTI (L70); 1.3 CDTI (R97) |
| Year of manufacture | 1998-2014 |
| Manufacturer article number (MPN) | M-S4021 |
| OE part numbers | 03 50 138, 090538865, 3 50 138, 90538865 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
MERTZ m-s4021 . Fitting Position: VL. Fitting Position: VR. Inner Diameter [mm]: 18 mm. Material: 4
- 1x Mounting Stabiliser Bar
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 4–8 business days
- Order before 5pm — ships the next working day
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Mounting Stabiliser Bar compatible with my car?
This Mounting Stabiliser Bar fits OPEL vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this MERTZ Mounting Stabiliser Bar have?
This MERTZ Mounting Stabiliser Bar has the following specifications: Fitting Position: VR; Fitting Position: VL; Material: 4; Inner Diameter [mm]: 18 mm. Check the full specifications table above for complete details.
What OE part numbers does this Mounting Stabiliser Bar replace?
This Mounting Stabiliser Bar replaces OE part numbers: 03 50 138, 090538865, 3 50 138, 90538865. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Mounting Stabiliser Bar cost?
This MERTZ Mounting Stabiliser Bar is available for £1.99. Mounting Stabiliser Bar prices vary depending on brand, specifications, and vehicle compatibility. MERTZ parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Mounting Stabiliser Bar?
Regular inspection of your Mounting Stabiliser Bar is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a Mounting Stabiliser Bar?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the Mounting Stabiliser Bar fitted by a professional mechanic.
Can I use this part as a replacement for OE 03 50 138?
Yes, this MERTZ Mounting Stabiliser Bar is a direct replacement for OE part number 03 50 138. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
