MazSpec Original Exhaust Manifold to Mid-Pipe Clamping Spring – MO-NC0-6-002
Replacement exhaust manifold to mid-pipe clamping spring for Mazda MX-5 MK3.5 / NC2 and MK3.75 / NC3 1.8L and 2.0L petrol models (2009–2015). Used at the spring-loaded exhaust flange connection between the exhaust manifold/front catalytic-converter assembly and the centre exhaust pipe.
This clamping spring works alongside the exhaust fixing bolt to maintain pressure across the exhaust joint, helping keep the connection securely assembled while allowing controlled movement as the exhaust system heats up, cools down and moves with the engine.
The exhaust manifold-to-mid-pipe connection uses two spring-loaded fasteners. Each spring is positioned around its corresponding fixing bolt, providing the compressive force required by the original sprung-joint arrangement.
Exhaust clamping springs are exposed to repeated heating and cooling cycles, road spray, corrosion and vibration. Over time, these conditions can cause the springs to weaken, crack, deform or corrode, affecting the fastening pressure at the exhaust joint.
This MazSpec Original replacement spring is ideal for exhaust repairs, manifold removal, mid-pipe replacement and renewal of corroded or damaged exhaust mounting hardware.
Product features and specifications:
- Product type: Exhaust clamping / compression spring
- Brand: MazSpec Original
- Product reference: MO-NC0-6-002
- Location: Exhaust manifold/front catalytic converter to mid-pipe connection
- Function: Maintains spring-loaded clamping pressure at the exhaust joint
- Installation: Fits over the corresponding exhaust joint fixing bolt
- Vehicle applications: Mazda MX-5 MK3.5 / NC2 and MK3.75 / NC3
- Engine applications: 1.8L MZR L8 and 2.0L MZR LF petrol
- Quantity supplied: 1 spring
- Quantity required per vehicle: 2 springs
- Exhaust fixing bolts: Sold separately
- Exhaust sealing ring: Sold separately
Why Is the Exhaust Clamping Spring Important?
- Maintains compression across the sprung exhaust flange connection.
- Helps the joint accommodate movement caused by engine vibration.
- Allows controlled expansion and contraction as exhaust temperatures change.
- Helps maintain even pressure against the exhaust sealing ring.
- Provides replacement fastening hardware during exhaust repairs.
Common replacement reasons:
- Original spring heavily corroded or weakened.
- Spring cracked, fractured or distorted.
- Spring permanently compressed.
- Exhaust manifold or mid-pipe removed for servicing.
- Spring missing or damaged during exhaust repair.
- Exhaust joint fastening hardware being renewed.
Quantity advice: Two clamping springs are fitted to the exhaust manifold-to-mid-pipe connection. This listing supplies one spring. Order a quantity of two when replacing both springs.
Fitment advice: Suitable for the spring-loaded manifold-to-mid-pipe exhaust connection on compatible Mazda MX-5 NC2 and NC3 1.8L and 2.0L models. Vehicles fitted with aftermarket manifolds, catalytic converters or centre exhaust pipes may use different fastening hardware.
Other items to consider: When renewing the exhaust clamping springs, inspect the two associated fixing bolts, retaining nuts and exhaust sealing ring. MazSpec also supplies the Genuine Mazda exhaust manifold-to-mid-pipe sealing ring L315-40-581 and corresponding exhaust fastening hardware for compatible MX-5 NC models.
Useful tools / consumables: Socket and spanner set, penetrating oil, wire brush, calibrated torque wrench, suitable vehicle lifting equipment and exhaust support equipment.
Difficulty guide: DIY Difficulty: Moderate. The spring itself is straightforward to replace, but the exhaust system operates at high temperatures and the fixing bolts may be heavily corroded or seized.
Why MazSpec Original? MazSpec Original replacement components provide practical repair solutions for commonly serviced Mazda MX-5 assemblies. This exhaust clamping spring is intended for the original sprung-joint arrangement on compatible NC2 and NC3 exhaust systems.
What's in the box: 1 × MazSpec Original Exhaust Manifold to Mid-Pipe Clamping Spring, reference MO-NC0-6-002. Fixing bolts, nuts, exhaust sealing ring and exhaust pipework are not included.
Installation / service notes: Allow the exhaust system to cool fully before beginning work. Safely support the vehicle and exhaust pipework. Apply penetrating oil to corroded fasteners, then remove the existing fastening hardware carefully. Inspect the fixing bolts, retaining nuts, springs, sealing ring and exhaust flange surfaces. Position the replacement spring correctly around its fixing bolt and assemble the connection evenly. Tighten the exhaust fasteners progressively to the applicable Mazda specifications, ensuring the joint remains properly aligned. Once assembled, inspect the connection for leaks and confirm that the exhaust system is securely supported.
| Make | Model | Sub Variant | Chassis / Code | Years | Power (PS) | Engine Codes | Fuel | Transmission | Notes |
|---|---|---|---|---|---|---|---|---|---|
| Mazda | MX-5 MK3.5 / NC | NC2 1.8L | NC / NCEC | 2009–2012 | 126 | L8-VE | Petrol | 5-speed manual | Exhaust manifold-to-mid-pipe clamping spring; 2 per vehicle |
| Mazda | MX-5 MK3.5 / NC | NC2 2.0L | NC / NCEC | 2009–2012 | 160 | LF-VE | Petrol | 5/6-speed manual; automatic where fitted | Exhaust manifold-to-mid-pipe clamping spring; 2 per vehicle |
| Mazda | MX-5 MK3.75 / NC | NC3 1.8L | NC / NCEC | 2013–2015 | 126 | L8-VE | Petrol | 5-speed manual | Exhaust manifold-to-mid-pipe clamping spring; 2 per vehicle |
| Mazda | MX-5 MK3.75 / NC | NC3 2.0L | NC / NCEC | 2013–2015 | 160 | LF-VE | Petrol | 5/6-speed manual; automatic where fitted | Exhaust manifold-to-mid-pipe clamping spring; 2 per vehicle |
| Reference Type | Reference |
|---|---|
| MazSpec Original Product Reference | MO-NC0-6-002 |
| Component Description | Exhaust Manifold to Mid-Pipe Clamping Spring |
| Quantity Required Per Vehicle | 2 |