FAI Cylinder Head Bolt Set M11 x 1.5
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eBayFAI AutoParts B1139 Bolt Kit, cylinder head for ,DACIA,MERCEDES-BENZ,NISSAN,RENA
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Product Information
Full details
This FAI Cylinder Head Bolt Set (M11 x 1.5, Box of 10) is designed for automotive repair professionals and serious DIY enthusiasts seeking OE-matching quality for engine maintenance. Its key benefit is ensuring a secure and reliable seal for cylinder heads, crucial for engine performance and longevity. A potential caveat is the need for precise torque specifications during installation, which are vehicle-specific.
All features
| Colour | White |
|---|---|
| Model Part Number | B1139 |
| Brand | FAI |
Extended Product Information
FAQs
Are these bolts reusable?
No, cylinder head bolts are typically designed for single use and should be replaced whenever the cylinder head is removed.
What does 'OE Matching Quality' mean?
It means the part is manufactured to meet or exceed the quality and performance standards of the original equipment (OE) part supplied with the vehicle.
How do I know if this bolt set is right for my car?
You must check your vehicle's service manual or a reliable parts database to confirm the exact bolt size (M11 x 1.5) and specifications are correct for your specific make, model, and engine.
What is the significance of M11 x 1.5?
M11 refers to the metric thread size with a major diameter of 11 millimeters. '1.5' refers to the thread pitch, meaning there are 1.5 millimeters between each thread crest.
What torque should I use?
Torque specifications are highly specific to the vehicle manufacturer and engine model. Always consult the official service manual for your vehicle to find the correct torque values and tightening sequence.
Why are these bolts sold in a box of 10?
This quantity is common for many automotive engines that require ten cylinder head bolts for a standard cylinder head assembly.
Troubleshooting
Bolt threads do not engage smoothly
Ensure the bolt hole in the engine block is clean and free of debris. Do not force the bolt; if resistance is met, check for cross-threading or obstructions.
Inability to achieve correct torque specification
Verify you are using the correct torque wrench and that it is calibrated. Ensure you are following the vehicle's specific torque sequence and final torque values precisely as per the service manual.
Bolt head stripped during tightening
This indicates excessive force was applied or the wrong tool was used. The bolt will need to be removed (potentially requiring specialized tools if broken) and replaced with a new one. Always use the correct size socket and a calibrated torque wrench.
Pros and Cons
Pros
- OE-quality assurance for reliable engine performance.
- Durable construction ensures longevity under demanding conditions.
- Precise fitment simplifies the installation process.
- Corrosion resistance protects against premature wear.
- Provided in a practical quantity for common repair jobs.
Cons
- Requires specific torque wrench settings for correct installation.
- Not universally compatible with all vehicle makes and models without verification.
- Installation requires engine disassembly, making it a labor-intensive repair.
Setup, Compatibility & Care
Setup: Ensure all mating surfaces of the cylinder head and engine block are perfectly clean and free of debris. Refer to the vehicle's specific service manual for the correct torque sequence and final torque values. Overtightening or undertightening can lead to gasket failure or bolt breakage.
Compatibility: While FAI offers a wide range of parts, it is crucial to verify that this specific M11 x 1.5 bolt set is compatible with your vehicle's make, model, and year. Consult your vehicle's service manual or a parts catalog to confirm the correct specifications before purchase and installation.
Care: These bolts are designed for single use during head gasket replacement. Once removed, they should not be reused. Keep the bolts in their original packaging until installation to prevent damage or contamination. After installation, proper engine operation and regular maintenance will ensure their long-term performance.