Replacement Victor Reinz cylinder head bolt set for Mazda MX-5 Mk1 / NA and Mk2 / NB 1.6 and 1.8 petrol models listed in the compatibility table.
Victor Reinz 14-55074-01 is a complete set of 10 cylinder head bolts used to secure the cylinder head to the engine block. Designed as an aftermarket replacement for the original components, the set corresponds with Mazda cylinder head bolt reference B660-10-135A and is suitable for the confirmed B6 and BP-family engine applications listed.
The cylinder head bolts provide the clamping force required to hold the cylinder head, cylinder head gasket and engine block together correctly. They should be considered whenever the cylinder head has been removed, particularly during head-gasket replacement, cylinder-head work or major top-end engine repairs.
Part details:
- Brand: Victor Reinz
- Product type: Cylinder head bolt set
- Victor Reinz part number: 14-55074-01
- Quantity supplied: 10 bolts
- Quantity required: 1 complete set per engine
- Thread size: M11
- Bolt length: approximately 120 mm
- Mazda reference: B660-10-135A
- Location: Cylinder head to engine block
Common reasons for replacement:
- Cylinder head removal
- Head-gasket replacement
- Cylinder-head overhaul or repair
- Major top-end engine rebuild
- Replacement of previously tightened or unsuitable cylinder head bolts during reassembly
Fitment advice:
These bolts are specifically catalogued for the applications shown in the compatibility table. Cylinder-head bolt specification is engine-specific, so bolts should not be selected simply because another Mazda uses a related B-series engine.
For imported, modified or previously repaired cars, matching the part number and component specification on the parts being replaced is recommended.
Other items to consider purchasing:
- Cylinder head gasket
- Cylinder head gasket set / top-end gasket set
- Rocker cover gasket
- Inlet and exhaust manifold gaskets
- Engine oil and oil filter
- Coolant
- Appropriate engine sealant where specified for the repair
Useful tools / consumables:
- Calibrated torque wrench
- Correct external-star socket for the cylinder head bolts
- Angle gauge where required by the workshop procedure
- Gasket-removal and surface-cleaning materials
- Straight edge and suitable measuring equipment for checking mating surfaces
Difficulty guide: Advanced. Cylinder-head removal and installation requires careful preparation, correct tightening sequence and adherence to the relevant Mazda workshop procedure.
Why Victor Reinz?
Victor Reinz is Dana's specialist sealing-products brand, supplying gaskets, sealing systems and associated engine service components to the automotive aftermarket. It is a well-established choice for engine sealing and cylinder-head repair work where reliable, application-specific components are required.
What's in the box:
- 10 × Victor Reinz cylinder head bolts
Installation notes:
Cylinder-head and engine-block mating surfaces should be inspected for condition and flatness before assembly. Install the bolts using the correct Mazda tightening sequence and torque/angle procedure for the specific engine. Do not substitute generic tightening specifications.
| Make | Model | Sub Variant | Chassis / Code | Years | Power (PS) | Engine Codes | Fuel | Transmission | Notes |
|---|---|---|---|---|---|---|---|---|---|
| Mazda | MX-5 | Mk1 / NA 1.6 | NA6C | 1990-1994 | 115 | B64F / B6ZE | Petrol | Manual / Automatic | Cylinder head bolt set; 10 bolts |
| Mazda | MX-5 | Mk1 / NA 1.6 | NA6C | 1995-1998 | 90 | 8AN1 | Petrol | Manual / Automatic | Cylinder head bolt set; 10 bolts |
| Mazda | MX-5 | Mk1 / NA 1.8 | NA8C | 1993-1998 | 130-131 | BPF1 / BP-ZE | Petrol | Manual / Automatic | Cylinder head bolt set; 10 bolts |
| Mazda | MX-5 | Mk2 / NB 1.6 16V | NB6C | 1998-2005 | 110 | B6MC / B6MU | Petrol | Manual / Automatic | Cylinder head bolt set; 10 bolts |
| Mazda | MX-5 | Mk2 / NB 1.8 | NB8C | 1998-2002 | 140 | BP5A / BP6J / BP-ZE | Petrol | Manual / Automatic | Cylinder head bolt set; naturally aspirated; 10 bolts |
| Mazda | MX-5 | Mk2.5 / NB-FL 1.8 VVT | NB8C | 2002-2005 | 139-146 | BP6J / BP-ZE | Petrol | Manual / Automatic | Cylinder head bolt set; naturally aspirated VVT application; 10 bolts |
| Manufacturer | OE Reference |
|---|---|
| Mazda | B660-10-135A |