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Details
| Specification | Value |
|---|---|
| Brand | BOSCH |
| Category | Power generator |
| Voltage [V] | 14 V |
| Alternator Charging Current [A] | 65 A |
| Length [mm] | 161 mm |
| Belt Pulley Ø [mm] | 65 mm |
| Clamp | B+(M8),D+(M5),W |
| Distance from belt pulley to alternator [mm] | 100 mm |
OE/OEM numbers (8)
Search by this OE number to find compatible parts
- VW—031903023
- VW—036 903 027 C
- VW—068 903 017 L
- VW—068 903 017 T
- VW—068 903 017 TX
- SEAT / VW—068903031
- VW—068 903 031 F
- SEAT / VW—068 903 031 H
Where this part fits
Original-fit position for OE 068903017T. The red ring marks where this part installs on the vehicle.
About this product
BOSCH Power generator (0 986 034 990) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Voltage [V]: Nylon V, Alternator Charging Current [A]: 65 A, Length [mm]: 161 mm, Fastening Type: Steel, Belt Pulley Ø [mm]: 65 mm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with SEAT, VW 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: 0 120 488 238, 0 120 489 378, 0 120 489 379, 0 120 489 449 and 29 more. Matching these numbers confirms a like-for-like replacement with no loss of function. BOSCH 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 BOSCH
Robert Bosch GmbH, founded in 1886 in Stuttgart, Germany, is one of the world's largest automotive parts suppliers. Bosch specialises in braking systems, fuel injection, spark plugs, alternators, and electronic engine management. As an OE supplier to virtually every major car manufacturer, Bosch parts meet or exceed original equipment specifications. With over 130 years of engineering innovation, choosing Bosch means choosing proven reliability backed by extensive research and development.
Suitable cars
Equivalent products (25)
Show all 25 OE numbers
Power generator BOSCH 0 986 034 990 — compatible car models
| Car models | SEAT: TOLEDO I (1L2); VW: GOLF II (19E, 1G1), GOLF II Van (19E, 1G1), JETTA II (19E, 1G2, 165), PASSAT B3/B4 (3A2, 35I), PASSAT B3/B4 Variant (3A5, 35I), POLO CLASSIC (86C, 80), POLO Coupe (86C, 80), POLO Hatchback Van (86CF), POLO II (86C, 80), TRANSPORTER T4 Bus (70B, 70C, 7DB, 7DK, 70J, 70K, 7DC, 7DJ) (+2 more) |
|---|---|
| Engines | 1.9 D; 1.6; 1.6 TD; 1.0 |
| Year of manufacture | 1981-2004 |
| Manufacturer article number (MPN) | 0 986 034 990 |
| OE part numbers | 031903023, 036 903 027 C, 068 903 017 L, 068 903 017 T, 068 903 017 TX, 068903031, 068 903 031 F, 068 903 031 H |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
BOSCH 0986034990 Power generator. Alternator Charging Current [A]: 65 A. Alternator Type: 3. Belt Pulley Ø [mm]: 65 mm. Clamp: B+(M8),D+(M5),W. Distance from belt pulley to alternator [mm]: 100 mm. Fastening Type: 1. Length [mm]: 161 mm. Number of grooves: 1
- 1x Power generator
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 Power generator compatible with my car?
This Power generator fits SEAT, VW 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 BOSCH Power generator have?
This BOSCH Power generator has the following specifications: Voltage [V]: 14 V; Alternator Charging Current [A]: 65 A; Length [mm]: 161 mm; Fastening Type: 1; Belt Pulley Ø [mm]: 65 mm; Clamp: B+(M8),D+(M5),W. Check the full specifications table above for complete details.
What OE part numbers does this Power generator replace?
This Power generator replaces OE part numbers: 031903023, 036 903 027 C, 068 903 017 L, 068 903 017 T, 068 903 017 TX, 068903031, 068 903 031 F, 068 903 031 H. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Power generator cost?
This BOSCH Power generator is available for £188.99. Power generator prices vary depending on brand, specifications, and vehicle compatibility. BOSCH parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Power generator?
Watch for dimming headlights, warning light on dashboard, dead battery, strange noises from the engine, or electrical accessories malfunctioning.
What tools do I need to replace a Power generator?
Tools needed: socket set (8-17mm), spanner set, serpentine belt tool or breaker bar, multi-meter (for testing charge output), battery terminal clamp remover. Difficulty: Moderate DIY. Safety warning: Disconnect the battery negative terminal before starting. Never disconnect the alternator with the engine running -- voltage spikes will destroy ECU electronics.
Can I use this part as a replacement for OE 031903023?
Yes, this BOSCH Power generator is a direct replacement for OE part number 031903023. 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.
