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Details
| Specification | Value |
|---|---|
| Brand | GM |
| MPN | im129 |
| Voltage [V] | 12 V |
| Length [mm] | 85 mm |
| Outer Diameter [mm] | 73 mm |
| Length 1 [mm] | 30 mm |
| Outer Diameter 1 [mm] | 42.5 mm |
| Length 3 [mm] | 276 mm |
OE/OEM numbers (4)
Search by this OE number to find compatible parts
- STEYR—406090742
- RENAULT / RENAULT KOREA—7701010686
- FIAT—8122135
- VOLVO—870810
About this product
Sourced from GM, this armature starter (IM129) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Voltage [V]: Zinc V, Length [mm]: 85 mm, Outer Diameter [mm]: 73 mm, Length 1 [mm]: 30 mm, Outer Diameter 1 [mm]: 42, Rubber mm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. This part supersedes original equipment references: 0001358017, 0001358018, 0001358020, 0001358047 and 8 more. Matching these numbers confirms a like-for-like replacement with no loss of function. GM 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.
Suitable cars
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (8)
Armature Starter GM IM129 — compatible car models
| Manufacturer article number (MPN) | IM129 |
|---|---|
| OE part numbers | 406090742, 7701010686, 8122135, 870810 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
GM im129 . Length 1 [mm]: 30 mm. Length 3 [mm]: 276 mm. Length [mm]: 85 mm. Outer Diameter 1 [mm]: 42,5 mm. Outer Diameter [mm]: 73 mm. Voltage [V]: 12 V
- 1x Armature Starter
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 Armature Starter compatible with my car?
Use the vehicle selector at the top of the page to check compatibility. Enter your car's make, model, and engine — we'll confirm whether this Armature Starter fits. All fitment data is verified through TecDoc.
What specifications does this GM Armature Starter have?
This GM Armature Starter has the following specifications: Voltage [V]: 12 V; Length [mm]: 85 mm; Outer Diameter [mm]: 73 mm; Length 1 [mm]: 30 mm; Outer Diameter 1 [mm]: 42,5 mm; Length 3 [mm]: 276 mm. Check the full specifications table above for complete details.
What OE part numbers does this Armature Starter replace?
This Armature Starter replaces OE part numbers: 406090742, 7701010686, 8122135, 870810. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Armature Starter cost?
Armature Starter prices vary depending on brand, specifications, and vehicle compatibility. Check the current price above for this GM Armature Starter. All parts come with our 14-day money-back guarantee.
How do I know when to replace my Armature Starter?
Regular inspection of your Armature Starter 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 Armature Starter?
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 Armature Starter fitted by a professional mechanic.
Can I use this part as a replacement for OE 406090742?
Yes, this GM Armature Starter is a direct replacement for OE part number 406090742. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
