Before You Order
Please ensure the part matches the photos and your vehicle before purchasing. OEM numbers are for reference only—this is an aftermarket part, not made or approved by the original vehicle manufacturer.
  • BMW E87, E90, E60, X3, X5, Z4 N52/N54 12V Alternator Voltage Regulator (12317540655). RSK Motor Spares. Fast South Africa delivery.
  • BMW E87, E90, E60, X3, X5, Z4 N52/N54 12V Alternator Voltage Regulator (12317540655). RSK Motor Spares. Fast South Africa delivery.
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BMW 1, 3, 5 Series, X3, X5, Z4 Series (N52 / N54) - Voltage Regulator

BMW 1, 3, 5 Series, X3, X5, Z4 Series (N52 / N54) - Voltage Regulator

R 899.99
R 899.99
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Description

This direct-replacement Alternator Voltage Regulator Unit is engineered specifically for BMW 1 Series, 3 Series, 5 Series, 6 Series, 7 Series, X3, X5, and Z4 models equipped with Valeo 150A/180A alternators and powered by N52, N53, and N54 6-cylinder naturally aspirated and TwinPower Turbo petrol engines sold in South Africa. Manufactured with high-precision solid-state circuitry, heavy-duty graphite carbon brushes, and an integrated heat sink, this electronic regulator maintains a stable 14.2V–14.7V charging output to the battery and vehicle electrical systems. Over time, original voltage regulator carbon brushes wear down or the internal diode/chip fails due to extreme engine bay thermal stress, causing battery discharge warnings, erratic instrument cluster flicker, overcharging, or complete charging system failure. Installing a direct-fit regulator restores accurate battery charging and protects sensitive onboard BMW electronic modules.
⚡ Non-Refundable: Electrical item — check carefully before buying.

Simplified Vehicle Compatibility List

BMW 1 Series (E81 / E82 / E87 / E88) (2005–2013) — 125i, 130i, 135i (N52 / N54 Engines)

BMW 3 Series Sedan / Coupe / Touring / Convertible (E90 / E91 / E92 / E93) (2005–2013) — 323i, 325i, 328i, 330i, 335i (N52 / N53 / N54 Engines)

BMW 5 Series Sedan / Touring (E60 / E61) (2004–2010) — 523i, 525i, 528i, 530i, 535i (N52 / N53 Engines)

BMW 6 Series Coupe / Convertible (E63 / E64) (2004–2010) — 630i (N52 Engine, 190 kW / 258 HP)

BMW 7 Series (E65 / E66 / F01) (2005–2012) — 730i / 730Li (N52 Engine, 190 kW / 258 HP)

BMW X3 (E83) (2006–2010) — 2.5si, 3.0si / xDrive28i, xDrive30i (N52 Engine)

BMW X5 (E70) (2006–2010) — 3.0si / xDrive30i (N52 Engine, 200 kW / 272 HP)

BMW Z4 Roadster / Coupe (E85 / E86 / E89) (2005–2016) — 2.5i, 2.5si, 3.0i, 3.0si, sDrive23i, sDrive30i, sDrive35i (N52 / N54 Engines)

Application Note: Electronic voltage regulator assembly for Valeo type alternators with LIN-bus communication interface. Attaches directly to the rear casing of the alternator assembly. Always check battery state of charge, inspect drive belt tensioner, and clean mounting contact slip ring surfaces prior to installation.

Specifications

Part Type: Alternator Electronic Voltage Regulator Unit

Fitting Position: Rear Alternator Housing Casing

Part Supplier Code: REG-BMW-12317540655

OEM Reference Numbers: 12 31 7 540 655 / 12317540655 / 12 31 7 550 968 / 12317550968 / 12 31 7 551 153 / 12317551153 / 12 31 7 516 103 / 12317516103

Cross-Reference Part Numbers: VALEO 595253 / VALEO 2543208 / VALEO 593982 / AS-PL ARE3047 / MOBILETRON VR-V5253 / CARGO 235805 / ERA 216253 / AS-PL ARE3061

Rated Voltage / Charge Set Point: 12V Nominal / 14.3V–14.7V Output

Communication Protocol: LIN-Bus (Local Interconnect Network) Interface

Assembly Inclusions: Voltage Regulator Unit with Integrated Carbon Brushes & Protective Plastic Housing

Fast and reliable delivery available across South Africa.
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