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Details
| Specification | Value |
|---|---|
| Brand | BGA |
| MPN | bk4378 |
| Thread Size | M10 |
| Length 1 [mm] | 110 mm |
OE numbers (1)
Search by this OE number to find compatible parts
- TOYOTA—9091002088(x10)
About this product
The BGA Cylinder Head Bolt Set (BK4378) 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: Thread Size: M10 Thread, Bolt Head-/Nut Design: Cast Iron, Length 1 [mm]: 110 mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit LEXUS, LINCOLN 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: 14-12043-01, 81023900, 81049500, 9091002088(x10) and 3 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 with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
Suitable cars
Equivalent products (6)
Cylinder Head Bolt Set BGA BK4378 — compatible car models
| Car models | LEXUS: GS (S16), LS (F1), LS (F2); LINCOLN: LS |
|---|---|
| Engines | 400 (UZS160, UZS160R); 400 (UCF10); 400 (UCF20, UCF20R); 4.0 V8 32V |
| Year of manufacture | 1989-2004 |
| Manufacturer article number (MPN) | BK4378 |
| OE part numbers | 9091002088(x10) |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
BGA bk4378 . Bolt Head-/Nut Design: 3. Length 1 [mm]: 110 mm. Thread Size: M10
- 1x Cylinder Head Bolt Set
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 Cylinder Head Bolt Set compatible with my car?
This Cylinder Head Bolt Set fits LEXUS, LINCOLN 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 Cylinder Head Bolt Set have?
This BGA Cylinder Head Bolt Set has the following specifications: Thread Size: M10; Bolt Head-/Nut Design: 3; Length 1 [mm]: 110 mm. Check the full specifications table above for complete details.
What OE part numbers does this Cylinder Head Bolt Set replace?
This Cylinder Head Bolt Set replaces OE part numbers: 9091002088(x10). Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Cylinder Head Bolt Set cost?
This BGA Cylinder Head Bolt Set is available for £27.99. Cylinder Head Bolt Set 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 Cylinder Head Bolt Set?
Regular inspection of your Cylinder Head Bolt Set 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 Cylinder Head Bolt Set?
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 Cylinder Head Bolt Set fitted by a professional mechanic.
Can I use this part as a replacement for OE 9091002088(x10)?
Yes, this BGA Cylinder Head Bolt Set is a direct replacement for OE part number 9091002088(x10). 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.
