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Details
| Specification | Value |
|---|---|
| Brand | OPTIMAL |
| MPN | g3-020 |
| Fitting Position | Bottom |
| Fitting Position | Front Right |
| Fitting Position | Front Left |
| Cone Pitch | 1/6 |
| Cone Size [mm] | 13.5 mm |
| External Thread [mm] | M12 x 1.50 RHT M mm |
OE/OEM numbers (6)
Where this part fits
Original-fit position for OE 1603167. The red ring marks where this part installs on the vehicle.
About this product
When ball joint performance matters, the OPTIMAL G3-020 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Fitting Position: U, Fitting Position: Front Right, Fitting Position: Front Left, Cone Pitch: 1/6, Cone Size [mm]: Polyurethane, Rubber mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with OPEL, VAUXHALL 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: 027290128576, 0400062, 041244B, 05170 and 66 more. Matching these numbers confirms a like-for-like replacement with no loss of function. OPTIMAL 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
About OPTIMAL
OPTIMAL, founded in Germany, is a well-regarded aftermarket brand specialising in steering, suspension, and wheel bearing components. OPTIMAL produces ball joints, tie rod ends, control arm bushings, wheel bearings, and stabiliser links for European, Asian, and American vehicle applications. Manufactured to stringent quality standards with comprehensive testing protocols, OPTIMAL parts deliver OE-matching fit and performance. Known for excellent value and wide vehicle coverage, OPTIMAL is a popular choice among professional workshops across Europe.
Suitable cars
Equivalent products (67)
Show all 67 OE numbers
Ball Joint OPTIMAL G3-020 — compatible car models
| Car models | OPEL: ASCONA C Hatchback (J82), ASCONA C (J82), ASTRA F CLASSIC Estate (T92), ASTRA F CLASSIC Hatchback (T92), ASTRA F CLASSIC Saloon (T92), ASTRA F Convertible (T92), ASTRA F Estate (T92), ASTRA F Estate Van (T92), ASTRA F Hatchback (T92), ASTRA F Saloon (T92) (+3 more); VAUXHALL: ASTRA Mk III (F) Convertible (T92), ASTRA Mk III (F) Estate (T92), ASTRA Mk III (F) Hatchback (T92), ASTRA Mk III (F) Saloon (T92), ASTRAVAN Mk III (F) Estate Van (T92), CALIBRA (C89), CAVALIER Mk II Convertible (J82), CAVALIER Mk II Estate (J82), CAVALIER Mk II Hatchback (J82), CAVALIER Mk III Hatchback (J89) (+2 more) |
|---|---|
| Engines | 1.3 N (F68, M68); 1.3 N (F11, M11, F69); 1.4 i (F35, M35); 1.4 i (M08, M68, F08, F68); 1.4 i (F19, M19); 1.4 i 16V; 1.4 (F35, M35); 1.4 i (F70); 1.4 (F08, M08, F68, M68); 1.4 (F19, M19); 2.0 i 16V 4x4 (M07); 1.4 S (F68, M68); 1.4 S (F19, M19); 1.6 i; 1.4 i (+4 more) |
| Year of manufacture | 1981-2005 |
| Manufacturer article number (MPN) | G3-020 |
| OE part numbers | 1603121, 1603163, 1603167, 90141393, 90295479, 90297863 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
OPTIMAL g3-020 . Cone Pitch: 1/6. Cone Size [mm]: 13,5 mm. External Thread [mm]: M12 x 1,50 RHT M mm. Fitting Position: U. Fitting Position: VL. Fitting Position: VR. Registration Type: 22. Supplementary Article/Supplementary Info: 0
- 1x Ball Joint
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- 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 Ball Joint compatible with my car?
This Ball Joint fits OPEL, VAUXHALL 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 OPTIMAL Ball Joint have?
This OPTIMAL Ball Joint has the following specifications: Fitting Position: U; Fitting Position: VR; Fitting Position: VL; Cone Pitch: 1/6; Cone Size [mm]: 13,5 mm; External Thread [mm]: M12 x 1,50 RHT M mm. Check the full specifications table above for complete details.
What OE part numbers does this Ball Joint replace?
This Ball Joint replaces OE part numbers: 1603121, 1603163, 1603167, 90141393, 90295479, 90297863. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Ball Joint cost?
This OPTIMAL Ball Joint is available for £19.99. Ball Joint prices vary depending on brand, specifications, and vehicle compatibility. OPTIMAL parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Ball Joint?
Signs include clunking or knocking noises from the front suspension, wandering steering, uneven tyre wear, or vibration in the steering wheel.
What tools do I need to replace a Ball Joint?
Tools needed: ball joint separator (fork or press type), 18-21mm socket, hub nut socket (32-36mm on driven axles), torque wrench, new cotter pin. Difficulty: Moderate DIY. Safety warning: Never reuse an old split pin (cotter pin) after disturbing a ball joint nut. A loose ball joint can allow the wheel to detach from the vehicle at speed -- this is a critical safety component.
Can I use this part as a replacement for OE 1603121?
Yes, this OPTIMAL Ball Joint is a direct replacement for OE part number 1603121. 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.
