Nissan SR20 LS1 140A Alternator Conversion Kit | S13 S14 S15 180SX

Upgrade your ageing factory SR20 alternator with a modern high-output LS1 140A alternator using our billet alternator conversion kit.

Let’s face it — factory Nissan SR20 alternators are getting pretty old now. Many have spent 25+ years dealing with heat, vibration and increased electrical demands they were never designed for.

Instead of replacing it with another standard-output SR20 alternator, this kit allows you to fit the early LS1 140A alternator (AC Delco #92058857) to an SR20 rear-wheel-drive engine.

Why Upgrade to an LS1 140A Alternator?

A higher-output alternator is a great upgrade for modified SR20-powered cars, particularly those running additional electrical equipment such as:

• High-flow fuel pumps
• Twin or high-powered thermo fans
• Aftermarket ECUs
• Additional gauges and sensors
• Electric water pumps
• High-powered ignition systems
• Stereo and amplifier systems
• Additional lighting and accessories

The LS1 alternator provides significantly more charging capacity, helping support the increased electrical demands of a modified street, drift, track or race car.

Billet 6061-T6 Construction

Our conversion brackets are precision machined from 6061-T6 billet aluminium for excellent strength while keeping weight to a minimum.

The components are then black anodised to provide additional corrosion protection and a clean finish in the engine bay.

Colour: Black only

Sorry, no other colours are currently available.

Kit Includes

• 1x Lower Alternator Bracket
• 1x Upper Alternator Adjuster
• 1x Adjuster Insert
• 1x Pulley Spacer
• 1x Alternator Pulley
• 1x Hardware Kit

Please note: Alternator is not included.

Alternator Required

Designed to suit the early LS1 140A alternator.

AC Delco Part Number: 92058857

We recommend confirming the alternator part number and design before purchasing an alternator for use with this conversion kit.

Vehicle Applications

Designed for rear-wheel-drive Nissan SR20DE and SR20DET engines, including:

• Nissan S13 Silvia – SR20DE
• Nissan S13 Silvia – SR20DET
• Nissan RPS13 180SX – SR20DE
• Nissan RPS13 180SX – SR20DET
• Nissan S14 Silvia / 200SX – SR20DE
• Nissan S14 Silvia / 200SX – SR20DET
• Nissan S15 Silvia / 200SX – SR20DE
• Nissan S15 Silvia / 200SX – SR20DET

Perfect for Modified SR20 Builds

Whether you’re building a street car, drift car, track car or high-powered SR20, upgrading the charging system is often overlooked until the factory alternator starts struggling.

Fit a readily available, high-output LS1 alternator and give your SR20 electrical system the charging capacity it needs.