Turbo Manifold Nissan SR20 OEM Low Mount
Nissan SR20 OEM Low Mount Turbo Manifold
Developed for SR20 owners who want to retain the factory low-mount turbo position, the Walton Motorsport OEM Low Mount Manifold is designed as a direct replacement for the original Nissan SR20 turbo manifold.
Rather than converting the car to a high-mount turbo system, this manifold retains the familiar OEM-style layout and T25/T28 turbo flange, making it ideal for street and performance builds where simple fitment, factory-style packaging and easy serviceability are the priorities.
Nissan SR20 Turbo Manifold - OEM-Position Turbo Fitment
The manifold positions the turbocharger in the factory low-mount location and uses a T25/T28-style turbo flange for compatibility with OEM-position turbocharger installations.
This makes it particularly useful for builds using an upgraded stock-location turbo where there is no need or desire to redesign the complete intake, exhaust and engine-bay layout around a high-mount system.
For a responsive street-driven SR20, this allows the turbo system to be upgraded while retaining much of the packaging and simplicity of the original Nissan arrangement.
Nissan SR20 Turbo Manifold - Retains S15 ABS Compatibility
Packaging matters on an OEM-position manifold.
The Walton SR20 Low Mount has been designed to retain the compatibility expected from the original manifold, including clearance for S15 ABS-equipped vehicles.
This makes it a particularly useful option for road and fast-road cars where retaining factory systems and an uncluttered engine bay is just as important as improving the turbo system.
Nissan SR20 Turbo Manifold - Low Mount or High Mount?
Choose the OEM Low Mount when you want to retain the factory-style turbo position and T25/T28 fitment, particularly for a responsive street or performance build using an OEM-position turbocharger.
Choose the SR20 High Mount when the build requires a different turbocharger position, greater freedom around turbo sizing and exhaust layout, or is moving towards a more extensively modified competition-style turbo system.
Neither approach is inherently better – the right manifold depends on what you're trying to achieve with the car.
Nissan SR20 Turbo Manifold - A Straightforward SR20 Upgrade
The OEM Low Mount is intended to keep the turbo installation straightforward rather than forcing unnecessary changes elsewhere in the vehicle.
For SR20 owners looking for a stock-position replacement manifold with scope for a performance turbo upgrade, it provides a simple route forward without committing to a complete high-mount conversion.
If you're unsure whether the OEM Low Mount or High Mount manifold is the better option for your SR20 build, contact Walton Motorsport before ordering and we can help establish the appropriate setup.
Further Questions?
Turbo Manifold Nissan SR20 OEM Low Mount - T25/T285/T25/T288 is backordered and will ship as soon as it is back in stock.
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Turbo Manifold Nissan SR20 OEM Low Mount
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Suits Engine
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Suits ChassisNissan S13, Nissan S14, Nissan S15
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Built to Last. Backed for Life.
A lifetime warranty is easy to offer. Building a turbo manifold that's unlikely to ever need it is the hard part.
You can find the full details of the Walton Motorsport Warranty HERE
Every Walton Motorsport manifold is engineered to withstand the extreme temperatures, vibration and abuse that come with high-performance street and race applications. From material selection and fabrication to our cast collectors and proven designs, durability is built into every product.
The biggest inconvenience of a failed manifold isn't the repair—it's the downtime, the labour to remove it, and the event or track day you might miss. That's why our focus has always been on preventing failures before they happen, not simply replacing parts after they do.
We're proud to stand behind every manifold we manufacture with a Lifetime Warranty. While no mechanical component is indestructible, our goal has always been simple: build products that earn your trust by performing reliably for years to come.
Because when you choose Walton Motorsport, the last thing you should be worrying about is your manifold.
Material Selection
Every Walton Motorsport manifold starts with carefully selected 304 stainless steel tubing. Not all 304 stainless is manufactured to the same standard, and the quality of the tubing plays a critical role in the durability of the finished product.
Turbo manifolds are subjected to thousands of extreme heat cycles throughout their life. Lower-quality tubing can fatigue over time, and we've seen inferior materials crack or split along the welded seam under these conditions. That's why we specify the exact tube grade and wall characteristics we know will perform reliably in demanding street and motorsport applications.
Our cylinder head flanges are designed in-house and precision cut using modern fibre laser technology, providing exceptional dimensional accuracy and repeatability. Compared to traditional CO₂ laser cutting, fibre laser cutting delivers cleaner edges and tighter tolerances, ensuring an accurate fit and consistent sealing.
Manufacturing Process
Port-Matched Flange Construction
Rather than simply welding the runners to the face of the flange, Walton Motorsport machines each runner to pass through the flange before it is TIG welded from both sides. The ports are then hand-finished to produce a smooth, uninterrupted transition from the cylinder head into the runner.
This manufacturing method delivers several important advantages:
- Increased weld strength and long-term durability.
- Improved gas flow by eliminating abrupt transitions.
- A smoother change from the oval exhaust port to the round runner.
- Reduced turbulence for improved exhaust efficiency.
The result is a manifold that is stronger, flows better, and is built to withstand years of hard use.
Cast Merge Collector
At the heart of every Walton Motorsport manifold is our proprietary cast merge collector, designed entirely in-house.
Our latest collector design delivers the highest wastegate flow we've achieved while maintaining excellent merge efficiency into the turbine. The internal geometry provides smooth gas transitions, minimising turbulence and helping to reduce exhaust gas temperatures without sacrificing performance.
Unlike fabricated collectors assembled from multiple sections, our one-piece cast design eliminates internal joints and welds within the collector itself. This not only optimises gas flow but also significantly improves structural integrity, reducing the likelihood of collector failures that can damage turbochargers or engines.
Every design decision is made with the same objective: maximum performance, exceptional durability, and complete confidence when pushing your engine to its limits.
For a deeper look at our engineering philosophy and manufacturing methods, visit our Technical Centre.
Proven Motorsport Experience
In every Walton Manifold
