Exhaust Header
EXHAUST HEADER MANIFOLD FOR NISSAN 89-98 240SX/SILVIA S13/S14/S15 SR20DET
A 1-3/4 inch shorty exhaust header manifold for the 1989-1998 Nissan 240SX and Silvia S13, S14, S15 with the SR20DET engine. Fitment is year and model specific and does not cover non-SR20DET variants.
- ExclusionDoes not fit non-SR20DET engines or non-Silvia models
What You Get
Key Benefits
- 1-3/4 inch primaries reduce exhaust back pressure and improve turbo spool response
- Shorty design fits under the engine with minimal clearance issues on lowered or modified chassis
Why Buyers Switch
Problems It Solves
- Factory cast iron manifolds crack under high heat and boost pressure
- Rusted flanges on old manifolds cause exhaust leaks and misfires
- Universal headers require cutting and welding, which increases shop labour time
- Poorly machined flanges on cheap aftermarket headers leak at the turbo joint
Where It Is Used
Application Scenarios
- Performance shops upgrading SR20DET engines for track or street use
- Distributors stocking bolt-on exhaust parts for classic JDM platforms
- Online sellers needing a vehicle-specific part with a clean fitment list for resale
- Tuning shops replacing cracked factory manifolds that fail under high boost
Buyers
Who It Is For
- Overseas performance parts distributors buying direct from factory
- JDM specialty wholesalers serving SR20DET owners in North America and Europe
- Independent installation shops that need a ready-to-fit header without welding
Construction
Technical Features
- Bolt-on fitment using factory mounting points and turbo outlet pattern
- Gasket included in the package for the turbo flange joint
Data
Specifications
| Exclusion | Does not fit non-SR20DET engines or non-Silvia models |
|---|
Material
Materials
- Included gasket for turbo joint
Manufacturing
How It Is Made
Tube bending to match factory header routing
Test fit against factory mounting points and turbo outlet before packing
Checks
Quality Control
- Flange bolt pattern and sealing face checked before welding
- Weld seams inspected for pinholes along the full joint
Private Label
Customisation Options
- Private label packaging and barcode labels on request
- Bulk cartons available for container orders instead of individual boxes
Comparison
Compared With The Alternatives
| Factory cast iron manifold | The stock manifold is heavier and prone to cracking under boost; this one is lighter and more durable |
|---|---|
| Universal cut-to-fit header | A universal header requires welding and fitting; this one bolts on without modification |
Installation
Use Guide
- Confirm the vehicle is a 1989-1998 240SX or Silvia S13, S14, S15 with the SR20DET engine
- Let the engine cool completely before removing the factory manifold
- Replace the old gasket with the included one; do not reuse the old one
- Torque the flange bolts evenly in a cross pattern to maintain sealing face flatness
- Recheck flange torque after the first heat cycle to prevent leaks
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Answers
Questions About This Part
Will this fit a 1995 Silvia S15 with a non-SR20DET engine?
No. The part is designed for the SR20DET engine only and does not fit non-SR20DET variants.
What size are the header primaries?
1-3/4 inch. This matches the factory primary tube size for the SR20DET.
Is the gasket included?
Yes. One gasket is included in the package for the turbo flange joint.
Can I use this on a turbocharged engine other than SR20DET?
No. The part is designed specifically for the SR20DET engine and uses the factory mounting and turbo outlet pattern.
Is this a shorty or long tube header?
This is a shorty header. It is designed to fit under the engine with minimal clearance.
Can we get our own brand on the box?
Yes. Private label packaging and barcode labels can be arranged, and bulk cartons are available for container orders.
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