Exhaust Header · SKU 701807515376
RACING MANIFOLD HEADER/EXHAUST FOR 01-05 LEXUS IS300 ALTEZZA XE10 3.0L l6 2JZ-GE
A 2.25 inch polished stainless steel exhaust header for the 2001-2005 Lexus IS300 Altezza XE10 3.0L L6 2JZ-GE. It replaces the factory manifold with a 3-2 design and ships as a complete set with three gaskets and eight nuts. Fitment is specific to the listed model years and engine. The header uses a mid-steel flange with chrome plating for corrosion resistance at the bolted joint.
- MaterialStainless Steel
- SurfacePolished
- Size2.25 inch
- FlangeMid-Steel, Chrome Plated
What You Get
Key Benefits
- 3-2 manifold design improves exhaust scavenging and engine breathing at high RPM
- 2.25 inch inlet and outlet size matches factory port dimensions for direct bolt-on fit
- Polished stainless steel construction resists heat and road debris better than cast iron
- Mid-steel flange with chrome plating resists corrosion at the critical bolted joint
- Includes three gaskets and eight nuts so no additional hardware is needed at installation
Why Buyers Switch
Problems It Solves
- Factory manifolds restrict exhaust flow and limit high-RPM power output
- Cast iron manifolds crack under heat cycling and are heavy on the engine
- Generic headers require custom flanges or welding, increasing installation time and cost
- Missing gaskets or hardware delays installation and causes customer complaints
Where It Is Used
Application Scenarios
- Performance shops upgrading 2JZ-GE engines for track or street use
- Distributors stocking vehicle-specific headers for Japanese import markets
- Online sellers needing a photographed part with a clear fitment list for resale
- Tuning shops installing headers without requiring custom welding or flange fabrication
Buyers
Who It Is For
- Performance parts distributors buying direct from the factory for Japanese import vehicles
- Online auto parts sellers serving 2001-2005 Lexus IS300 and Altezza owners
Construction
Technical Features
- 3-2 exhaust header design with 2.25 inch inlet and outlet ports
- Stainless steel tube with polished surface finish
- Mid-steel flange with chrome plating for corrosion resistance
- Includes three gaskets and eight nuts for complete installation
- O2 sensor insertion point and metal gasket included for factory sensor placement
- Bolt-on fitment with factory routing and mounting points
Data
Specifications
| Material | Stainless Steel |
|---|---|
| Surface | Polished |
| Size | 2.25 inch |
| Flange | Mid-Steel, Chrome Plated |
Material
Materials
- Stainless steel tube
- Mid-steel flange with chrome plating
Manufacturing
How It Is Made
Tube bending to match factory manifold routing
Flange machining for a flat sealing face
Polishing of exterior and interior surfaces to a uniform finish
Final inspection against the factory flange pattern before packing
Checks
Quality Control
- Flange bolt pattern and sealing face checked before welding
- Weld seams inspected for pinholes along the full joint
- Surface checked for polish defects and handling marks before packing
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 restricts flow; this header improves exhaust velocity and engine response |
|---|---|
| Universal header kit | A universal kit requires flange cutting and welding; this one bolts on without modification |
| Mild steel aftermarket header | Mild steel is cheaper but rusts at the flange; this header uses chrome plated mid-steel for longer life |
Installation
Use Guide
- Confirm the vehicle is a 2001-2005 Lexus IS300 Altezza XE10 with 3.0L L6 2JZ-GE engine
- Remove the factory manifold and clean all mating surfaces before installing
- Use new gaskets and nuts provided to ensure a leak-free seal
- Torque flange bolts evenly in a crisscross pattern to maintain sealing face flatness
- Recheck torque after the first heat cycle to prevent leaks
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Answers
Questions About This Part
Will this fit a 2006 IS300?
No. The part is designed for 2001-2005 Lexus IS300 Altezza XE10 with the 3.0L L6 2JZ-GE engine only.
What size are the inlet and outlet ports?
Both inlet and outlet are 2.25 inch. This matches the factory port size for direct bolt-on fit.
Is the flange included or do I need to weld one on?
The mid-steel flange with chrome plating is already fitted. The header ships as a complete unit.
What is included in the package?
One exhaust header, three gaskets, and eight nuts. No additional hardware is included.
Can I get this with my own brand on the box?
Yes. Private label packaging and barcode labels can be arranged. Bulk cartons are available for container orders.
Is this street legal in my country?
We do not claim emissions compliance. Check your local regulations before resale or installation.
What shipping options are available?
Domestic US orders ship via FedEx or USPS. International orders ship via DHL Express. Alaska, Hawaii, and Puerto Rico are not served.
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