Product Guides
Universal Astra Power Steering Pump Conversion Guide
Aug
Universal Astra Power Steering Pump Conversion Guide (FAQ)
The Opel Astra TRW electronic power steering pump has become a popular upgrade for custom builds, hot rods, track cars, and classic conversions. Compact, reliable, and easy to retrofit, it’s the perfect choice when space is tight and you need an electric pump solution.
This guide covers the dimensions, fittings, hoses, and wiring you’ll need to know when installing an Astra pump with a universal bracket.
What are the Astra power steering pump dimensions?
The TRW Astra pump is compact and easy to mount:
Height: 280 mm
Base footprint: 220 mm x 140 mm
This makes it suitable for a wide range of universal fitments where space is limited.
What fittings are on the Astra pump?
The Astra Power Steering Pump (Opel TRW Pump) comes with two main connections:
Low Pressure Return: 3/8″ hose barb, push-on style.
High Pressure Outlet: M16 x 1.5 mm threaded port.
To simplify the high-pressure connection, Lowe Fab recommends using a Speedflow M16x1.5 to -6AN adaptor, which allows you to run braided -6AN hose for a professional finish.
What hoses do I need for the Astra pump?
Low Pressure Line: Standard hydraulic 3/8 rubber push-loc hose with clamps.
High Pressure Line: PTFE lines -6AN braided line for strength and reliability under pressure.
Using AN fittings not only improves durability but also makes routing neater and easier in tight engine bays.
How do you wire the Astra power steering pump?
Wiring is straightforward, but proper cable sizing and fusing is critical due to the high current draw of the pump.
Brown (Large): Ground / Earth
Red: Battery / +12V (Fused connection direct from battery)
Brown (Small): ECU communication wire (not required for retrofits)
Black: Ignition switched power
Blue / White: Secondary ignition feed (optional on retrofits; originally used as a delayed source to improve pump start-up behaviour)
Important Notes on Wiring:
Always use correct cable sizing to handle the pump’s current draw.
Ensure solid earthing points and quality fuses.
Poor wiring will lead to weak performance or pump failure.
What makes the Astra Power Steering Pump a good choice for conversions?
Compact size – fits easily in most engine bays.
Standalone wiring – doesn’t require ECU integration to function.
Readily available fittings & brackets – Lowe Fab offers a universal Astra pump bracket and Speedflow fittings to make installation easier.
Proven reliability – widely used in motorsport and custom street builds.
Summary
If you’re upgrading to an electric power steering setup, the Astra Power Steering Pump Conversion is universal, reliable, and compact solution. With the right mounting bracket, fittings, AN hoses, and proper wiring, it delivers clean installation and dependable performance in any build.
Lowe Fab stocks the universal Astra pump bracket and the Speedflow M16x1.5 to -6AN adaptor — making it simple to bolt in and hook up your new power steering system.
Engine bay accessories
Astra Power Steering Pump Bracket / Opel TRW – Universal Fit | Lowe Fab