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Details
| Specification | Value |
|---|---|
| Brand | JAPKO |
| MPN | zsj01049 |
| Fitting Position | Front |
| Diameter [mm] | 8 mm |
| Length [mm] | 311 mm |
| Stroke [mm] | 99 mm |
| Extention Force [N] | 400 N |
| Housing Diameter [mm] | 18 mm |
OE numbers (2)
Search by this OE number to find compatible parts
- BMW—51234881653
- BMW—51237309117
Where this part fits
Original-fit position for OE 51237309117. The red ring marks where this part installs on the vehicle.
About this product
When gas spring bonnet performance matters, the JAPKO ZSJ01049 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Fitting Position: Front, Diameter [mm]: Carbon mm, Length [mm]: 311 mm, Stroke [mm]: 99 mm, Extention Force [N]: 400 N. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with ALPINA, BMW 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: 08.63.037, 104116, 1271138, 20104116 and 10 more. Matching these numbers confirms a like-for-like replacement with no loss of function. JAPKO is a recognised supplier of automotive suspension 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 (13)
Gas Spring Bonnet JAPKO ZSJ01049 — compatible car models
| Car models | ALPINA: B5 Estate (F11), B5 (F10), B6 Convertible (F12), B6 Coupe (F13), B6 Gran Coupe (F06), D5 (F10), D5 Touring (F11); BMW: 5 (F10), 5 Touring (F11), 6 Convertible (F12), 6 Coupe (F13), 6 Gran Coupe (F06) |
|---|---|
| Engines | BITURBO; BITURBO All-wheel Drive; 518 d; 640 d |
| Year of manufacture | 2009-2018 |
| Manufacturer article number (MPN) | ZSJ01049 |
| OE part numbers | 51234881653, 51237309117 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
JAPKO zsj01049 . Diameter [mm]: 8 mm. Extention Force [N]: 400 N. Fitting Position: V. Housing Diameter [mm]: 18 mm. Length [mm]: 311 mm. Stroke [mm]: 99 mm
- 1x Gas Spring Bonnet
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 Gas Spring Bonnet compatible with my car?
This Gas Spring Bonnet fits ALPINA, BMW 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 JAPKO Gas Spring Bonnet have?
This JAPKO Gas Spring Bonnet has the following specifications: Fitting Position: V; Diameter [mm]: 8 mm; Length [mm]: 311 mm; Stroke [mm]: 99 mm; Extention Force [N]: 400 N; Housing Diameter [mm]: 18 mm. Check the full specifications table above for complete details.
What OE part numbers does this Gas Spring Bonnet replace?
This Gas Spring Bonnet replaces OE part numbers: 51234881653, 51237309117. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Gas Spring Bonnet cost?
This JAPKO Gas Spring Bonnet is available for £11.99. Gas Spring Bonnet prices vary depending on brand, specifications, and vehicle compatibility. JAPKO parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Gas Spring Bonnet?
Regular inspection of your Gas Spring Bonnet 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 Gas Spring Bonnet?
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 Gas Spring Bonnet fitted by a professional mechanic.
Can I use this part as a replacement for OE 51234881653?
Yes, this JAPKO Gas Spring Bonnet is a direct replacement for OE part number 51234881653. 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
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
