Genuine Mazda VVT Oil Control Valve Retaining Bolt • 9XF00-2117L

Genuine Mazda VVT Oil Control Valve Retaining Bolt

Replacement Genuine Mazda oil-control-valve retaining bolt for Mazda MX-5 Mk3.5 and Mk3.75 NC models fitted with the 2.0-litre LF-VE petrol engine.

This bolt secures the variable-valve-timing oil-control valve to the cylinder head. The oil-control valve regulates engine-oil flow to the intake-camshaft VVT actuator, allowing the engine-management system to alter intake-camshaft timing.

Correct retention of the valve is important for maintaining its position and sealing against the cylinder head. A missing, damaged or incorrectly fitted bolt may allow movement, oil leakage or an insecure valve installation.

One retaining bolt is used per applicable engine, and this listing supplies one Genuine Mazda fastener.

Important fitment restriction: This MX-5 application is for later Mk3.5 and Mk3.75 NC models with the 2.0-litre LF-VE engine. It is not listed here for the 1.8-litre engine or the earlier Mk3 NC1 2.0 installation.

Part-number formatting: The supplied reference 9XF00-2117L and Mazda catalogue format 9XF0-02-117L identify the same fastener.

• Part type: VVT oil-control-valve retaining bolt
• Common names: Oil-control-valve bolt / VVT solenoid bolt / cam-timing actuator fastener
• Mazda catalogue description: Bolt
• System: Variable valve timing
• Installation area: Cylinder head
• Installation position: Oil-control valve / VVT solenoid mounting
• Function: Secures the oil-control valve to the cylinder head
• Engine application: 2.0-litre LF-VE petrol engine
• Quantity fitted per engine: 1
• Quantity supplied: 1 bolt
• Oil-control valve included: No
• Valve seal or O-ring included: No
• VVT actuator included: No
• Brand: Genuine Mazda
• Supplied part number: 9XF00-2117L
• Mazda catalogue format: 9XF0-02-117L
• Compact reference: 9XF002117L
• Associated Mazda reference: 9XF0-02-11X9
• MX-5 fitment: Mk3.5 and Mk3.75 NC 2.0

Typical reasons for replacement:

• Oil-control valve removed for testing or replacement
• Original bolt missing following previous engine work
• Bolt head or drive surface damaged during removal
• Threads corroded, stripped or cross-threaded
• Incorrect general-purpose bolt previously installed
• Oil-control valve or surrounding cylinder-head components being renewed
• Original fastener overtightened or damaged

Quantity advice: One bolt secures the oil-control valve on the applicable engine. This listing supplies one bolt.

Fitment advice: Confirm that the vehicle is a later Mk3.5 or Mk3.75 NC fitted with the 2.0-litre LF-VE engine. Similar Mazda fasteners are used elsewhere and should not be selected by appearance alone.

Component identification: The oil-control valve is an electrically operated valve mounted in the cylinder-head area. This listing is for its retaining bolt only, not the valve or VVT actuator.

Thread inspection: Inspect and clean the cylinder-head mounting thread before installation. A replacement bolt will not repair stripped, contaminated or cross-threaded threads.

Valve inspection: Check the oil-control valve body, electrical connector, filter screen where applicable and sealing O-ring for contamination, damage or oil leakage.

Installation advice: Seat the oil-control valve and its seal correctly before inserting the bolt. Start the bolt by hand to prevent cross-threading and tighten it using the applicable Mazda workshop procedure.

Diagnostic advice: VVT-related fault codes or poor engine operation are not necessarily caused by the retaining bolt. Check the oil condition, oil pressure, electrical circuit, valve operation and mechanical timing as appropriate.

Other items to inspect: Check the oil-control valve seal, wiring connector, engine-oil condition, camshaft-position sensors, VVT actuator and surrounding cylinder-head oil leakage while access is available.

Useful tools / consumables: Correct-size socket, extension bar, calibrated torque wrench, electrical-contact cleaner where required, suitable parts cleaner and a replacement oil-control-valve seal if disturbed.

Difficulty guide: DIY Difficulty: Easy to Moderate. Direct bolt replacement is straightforward with suitable access, although diagnosis or replacement of the VVT oil-control valve requires additional care.

Why Genuine Mazda? Genuine Mazda engine fasteners match the original thread, length, head profile and cylinder-head mounting arrangement. Correct hardware helps retain the oil-control valve without damaging the valve body or cylinder-head threads.

What’s in the box: One Genuine Mazda VVT oil-control-valve retaining bolt, part number 9XF00-2117L.

Installation notes: Allow the engine to cool and disconnect the oil-control-valve electrical connector where required. Support the valve while removing the original bolt, then inspect the valve seal and cylinder-head thread. Seat the valve correctly, start the replacement bolt by hand and tighten it using the applicable Mazda workshop procedure. Reconnect the electrical connector, run the engine and inspect the area for oil leakage.