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Details
| Specification | Value |
|---|---|
| Brand | SPIDAN |
| Operating Pressure [bar] | 106 bar |
| Operating Mode | HY |
| Belt Pulley Ø [mm] | 120 mm |
OE numbers (2)
Search by this OE number to find compatible parts
- ALFA ROMEO—50 500 421
- ALFA ROMEO—51 839 103
Where this part fits
Original-fit position for OE 51839103.
About this product
When hydraulic pump steering performance matters, the SPIDAN 54439 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Operating Pressure [bar]: 106 bar, Operating Mode: Hybrid, Number of ribs: Copper, Belt Pulley Ø [mm]: 120 mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with ALFA ROMEO 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: 50 500 421, 51 839 103, 7617 955 561, 7617 955 567 and 6 more. Matching these numbers confirms a like-for-like replacement with no loss of function. SPIDAN 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.
Suitable cars
Equivalent products (8)
Hydraulic Pump Steering SPIDAN 54439 — compatible car models
| Car models | ALFA ROMEO: 159 (939), 159 Sportwagon (939) |
|---|---|
| Engines | 1.8 MPI (939AXL1A); 1.8 MPI (939BXL1A) |
| Year of manufacture | 2005-2012 |
| Manufacturer article number (MPN) | 54439 |
| OE part numbers | 50 500 421, 51 839 103 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
SPIDAN 54439 . Belt Pulley Ø [mm]: 120 mm. Number of ribs: 4. Operating Mode: HY. Operating Pressure [bar]: 106 bar
- 1x Hydraulic Pump Steering
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 Hydraulic Pump Steering compatible with my car?
This Hydraulic Pump Steering fits ALFA ROMEO 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 SPIDAN Hydraulic Pump Steering have?
This SPIDAN Hydraulic Pump Steering has the following specifications: Operating Pressure [bar]: 106 bar; Operating Mode: HY; Number of ribs: 4; Belt Pulley Ø [mm]: 120 mm. Check the full specifications table above for complete details.
What OE part numbers does this Hydraulic Pump Steering replace?
This Hydraulic Pump Steering replaces OE part numbers: 50 500 421, 51 839 103. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Hydraulic Pump Steering cost?
This SPIDAN Hydraulic Pump Steering is available for £567.99. Hydraulic Pump Steering prices vary depending on brand, specifications, and vehicle compatibility. SPIDAN parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Hydraulic Pump Steering?
Regular inspection of your Hydraulic Pump Steering is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a Hydraulic Pump Steering?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the Hydraulic Pump Steering fitted by a professional mechanic.
Can I use this part as a replacement for OE 50 500 421?
Yes, this SPIDAN Hydraulic Pump Steering is a direct replacement for OE part number 50 500 421. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Is the SPIDAN 54439 the same as the SPIDAN 52594?
No, while both are Hydraulic Pump Steering parts, they are different products. The SPIDAN 54439 has Operating Pressure [bar]: 106 bar, Operating Mode: HY, Number of ribs: 4. The SPIDAN 52594 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
