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Details
| Specification | Value |
|---|---|
| Brand | BGA |
| MPN | os5309 |
| Fitting Position | Transmission Side |
| Height [mm] | 7 mm |
| Inner Diameter [mm] | 38 mm |
| Outer Diameter [mm] | 50 mm |
OE/OEM numbers (5)
Search by this OE number to find compatible parts
- BMW—11121265435
- BMW—11121285609
- BMW—11121285620
- BMW—4424059
- PIAGGIO—829201
Where this part fits
Original-fit position for OE 4424059. The red ring marks where this part installs on the vehicle.
About this product
The BGA Shaft Seal Crankshaft (OS5309) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Fitting Position: GS, Height [mm]: Ceramic mm, Material: 27, Inner Diameter [mm]: 38 mm, Outer Diameter [mm]: 50 mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit BMW, PIAGGIO, TOYOTA models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 04590, 08.10.013, 11121265435, 11121285609 and 31 more. Matching these numbers confirms a like-for-like replacement with no loss of function. BGA 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Suitable cars
Equivalent products (31)
Show all 31 OE numbers
Shaft Seal Crankshaft BGA OS5309 — compatible car models
| Car models | BMW: 3 Convertible (E30), 3 (E21), 3 (E30), 3 (E36), 3 Touring (E30), 5 (E28), 5 (E34), 5 Touring (E34); PIAGGIO: PORTER Platform/Chassis, PORTER Van; TOYOTA: STARLET (P7), STARLET (P8) |
|---|---|
| Engines | 320 i; 320/6; 316 i; 520 i; 518 i; 1.3 16V; 1.5 D (NP70L, NP70R); 1.5 D (NP80, NP80) |
| Year of manufacture | 1975-1998 |
| Manufacturer article number (MPN) | OS5309 |
| OE part numbers | 11121265435, 11121285609, 11121285620, 4424059, 829201 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
BGA os5309 . Fitting Position: GS. Height [mm]: 7 mm. Inner Diameter [mm]: 38 mm. Material: 27. Outer Diameter [mm]: 50 mm
- 1x Shaft Seal Crankshaft
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- 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 Shaft Seal Crankshaft compatible with my car?
This Shaft Seal Crankshaft fits BMW, PIAGGIO, TOYOTA 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 BGA Shaft Seal Crankshaft have?
This BGA Shaft Seal Crankshaft has the following specifications: Fitting Position: GS; Height [mm]: 7 mm; Material: 27; Inner Diameter [mm]: 38 mm; Outer Diameter [mm]: 50 mm. Check the full specifications table above for complete details.
What OE part numbers does this Shaft Seal Crankshaft replace?
This Shaft Seal Crankshaft replaces OE part numbers: 11121265435, 11121285609, 11121285620, 4424059, 829201. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Shaft Seal Crankshaft cost?
This BGA Shaft Seal Crankshaft is available for £5.99. Shaft Seal Crankshaft prices vary depending on brand, specifications, and vehicle compatibility. BGA parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Shaft Seal Crankshaft?
Regular inspection of your Shaft Seal Crankshaft 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 Shaft Seal Crankshaft?
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 Shaft Seal Crankshaft fitted by a professional mechanic.
Can I use this part as a replacement for OE 11121265435?
Yes, this BGA Shaft Seal Crankshaft is a direct replacement for OE part number 11121265435. 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.
