Skip to main content
CP247
Gallery
BrandMAHLE
MPNMG 1139
OE refs5
SKU0287-MG 1139
GTIN / EAN3838922816495

Similar products

Customers also bought

Details

SpecificationValue
BrandMAHLE
MPNmg1139
CategoryPower generator
Voltage [V]14 V
Alternator Charging Current [A]40 A
Bore Diameter [mm]10.2 mm
Belt Pulley Ø [mm]69 mm
Distance of mounting bores [mm]21.0 mm
Mounting points diameter [mm]77.5 mm
Distance from belt pulley to alternator [mm]23.0 mm
Packaging length [cm]20.8 cm
Packaging width [cm]17.60 cm
Packaging height [cm]15.50 cm
Net Weight [g]3150 g

OE numbers (5)

Search by this OE number to find compatible parts

About this product

Sourced from MAHLE, this power generator (MG 1139) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Voltage [V]: Nylon V, Alternator Charging Current [A]: 40 A, Bore Diameter [mm]: Brass, Aluminium mm, Belt Pulley Ø [mm]: 69 mm, Pulleys: 0 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. This part supersedes original equipment references: 021080-0820, 101211-1170, 101211-1171, 102211-0010 and 7 more. Matching these numbers confirms a like-for-like replacement with no loss of function. MAHLE 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.

About MAHLE

MAHLE, founded in 1920 in Stuttgart, Germany, is a global leader in engine components and filtration systems. MAHLE specialises in pistons, cylinder liners, gaskets, turbocharger components, oil filters, air filters, and fuel filters. As an OE supplier to nearly every car and truck manufacturer worldwide, MAHLE products are engineered to exact factory specifications. Trusted by professional workshops and racing teams alike, MAHLE delivers outstanding engine performance and filtration efficiency across millions of applications.

Suitable cars

Vehicle matches are curated from manufacturer data

Confirmed fits based on manufacturer data.

Equivalent products (6)

DENSO021080-0820
DENSO101211-1170
DENSO101211-1171
DENSO102211-0010
DENSO102211-0011
LUCASLRA03058

Power generator MAHLE MG 1139compatible car models

Manufacturer article number (MPN)MG 1139
OE part numbers129423-77200, 129423-77210, AM879908, LVA12357, TY25243
Compatibility check

Loading vehicle data…

Please wait while we load vehicle compatibility information.
Description and what's included

MAHLE mg1139 Power generator. Alternator Charging Current [A]: 40 A. Alternator Type: 14. Belt Pulley Ø [mm]: 69 mm. Bore Diameter [mm]: 10,2 mm. Distance from belt pulley to alternator [mm]: 23,0 mm. Distance of mounting bores [mm]: 21,0 mm. Mounting points diameter [mm]: 77,5 mm. Net Weight [g]: 3150 g

What's included:
  • 1x Power generator
Shipping, returns, warranty

Free UK delivery on orders over £99.00. Tracked standard shipping.

  • Standard delivery: 5–9 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 Power generator 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 Power generator fits. All fitment data is verified through TecDoc.

What specifications does this MAHLE Power generator have?

This MAHLE Power generator has the following specifications: Voltage [V]: 14 V; Alternator Charging Current [A]: 40 A; Bore Diameter [mm]: 10,2 mm; Belt Pulley Ø [mm]: 69 mm; Pulleys: 0; Rotation Direction: 0. 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: 129423-77200, 129423-77210, AM879908, LVA12357, TY25243. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.

How much does a Power generator cost?

This MAHLE Power generator is available for £130.99. Power generator prices vary depending on brand, specifications, and vehicle compatibility. MAHLE 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 129423-77200?

Yes, this MAHLE Power generator is a direct replacement for OE part number 129423-77200. 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