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SKU: BXFL-00109
BLOX Racing JDM Honda Header Collector Flange 2.25inch (Stainless Steel) 1988-2002 Civic/Integra B-Series
The BLOX Racing JDM Honda Header Collector Flange is a CNC-machined stainless steel 4-to-1 merge collector designed for B16 and B18 JDM engines in Honda Civic and Integra models from 1988 to 2002. This 2.25-inch outlet flange connects header primaries to exhaust piping for smooth flow and horsepower increases. Ideal for custom header builds on track or street cars.
Key Features
- Stainless Steel Construction: 304-grade material resists corrosion heat and wear for long-lasting performance in demanding conditions. 0.5-inch thickness adds rigidity without excess weight
- 2.25-Inch Outlet: Matches standard mandrel-bent exhaust tubing for unrestricted flow and easy fabrication
- JDM B-Series Bolt Pattern: Exact 4-bolt pattern aligns with OEM and aftermarket B16A/B18C manifolds for secure leak-free fit
- CNC Precision Machining: Tight tolerances ensure perfect runner alignment and optimal exhaust scavenging
- Polished Finish: Smooth surface reduces turbulence enhances appearance under the hood
Product Notes
- Designed for custom header fabrication on JDM-spec Honda engines
- Inspect manifold gasket surface before installation for flatness
- Packaged to prevent shipping damage with foam inserts
Installation Notes
- Professional installation recommended.
- TIG weld primaries to flange using 304 filler rod for strength
- Compatible with ARP header studs and MLS gaskets
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1988-1991 | Honda | Civic | EF9 SiR (B16A JDM) |
| 1992-1995 | Honda | Civic | EG6 SiR (B16A JDM) |
| 1996-2000 | Honda | Civic | EK4/EK9 SiR (B16A/B16B JDM) |
| 1994-2001 | Honda | Integra | DC2 Type R (B18C JDM) |
| 1990-1993 | Honda | CR-X | EF9 SiR (B16A JDM) |
| 1992-1995 | Honda | Del Sol | SiR (B16A JDM) |
Why Choose BLOX Racing?
- Established leader in JDM Honda performance components since 2004
- Uses premium materials for reliable track-proven results
- Focuses on precise engineering for motorsport fabrication
Frequently Asked Questions
-
Q: Will this flange work on USDM B16 or B18 engines?
A: Yes JDM bolt pattern matches USDM B-series manifolds on Civic Si EG/EK and Integra GSR/Type R -
Q: What thickness is the stainless steel flange?
A: 0.5-inch thick 304 stainless steel provides rigidity without excess weight -
Q: Does installation require special tools?
A: TIG welder and header alignment jig recommended for professional results
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Sturdy 6 x 6 x 2 inch box with protective padding
- Weight: 0.75 lbs
BLOX Racing
BLOX Racing has built a strong following in the import and sport compact community since 2003 by delivering parts that meet or exceed OEM quality standards at prices that make building accessible. Every BLOX product is designed with ISO 9001-certified manufacturing processes and subjected to rigorous testing before release, ensuring fitment and reliability that matches the performance they advertise. Popular Upgrades BLOX Racing intake manifolds and throttle bodies are popular for Honda, Acura, and other sport compact platforms, delivering improved airflow and throttle response over stock components. Suspension components including adjustable end links, sway bars, and pillow ball mounts allow precise handling tuning for street and autocross use. Engine hardware — cam gears, valve train components, and timing chain kits — rounds out the BLOX catalog for builders pushing beyond stock engine parameters. What platforms does BLOX Racing support? BLOX Racing focuses primarily on Honda, Ac...
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Fabrication
Shop Fabrication Parts & Materials at Black Ops Auto Works for stainless steel tubing, titanium tubing, aluminum charge piping, mandrel bends, V-band clamps, flanges, merge collectors, AN fittings, PTFE hose kits, braided fuel and oil lines, heat shields, welding supplies, brackets, bungs, and hardware for building custom exhaust systems, turbo plumbing, intercooler piping, fuel systems, and engine bay routing. Start with tubing (304 or 321 stainless, titanium, or aluminum) in the right diameter and wall thickness, then add mandrel bends, flanges, V-bands, and clamps to complete the joint work. AN plumbing follows the same pattern: match dash size to horsepower target, pair the right hose (PTFE or CPE) with matching hose ends, and use adapters, bulkheads, and distribution blocks to route fuel, oil, and coolant cleanly. Shop by material (stainless, titanium, aluminum), fitting type (AN, ORB, NPT), diameter, or brand (Vibrant, Ticon, Stainless Bros, Radium, Fragola, DEI, ATP). ...
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Flanges
Exhaust flanges are the bolted connection points where exhaust manifolds mate to downpipes, where sections of exhaust pipe join at catalytic converters and muffler inlets, and where aftermarket headers connect to factory or custom collector sections, making flange quality and correct material specification critical for maintaining leak-free exhaust connections under the extreme temperature cycling that performance exhaust systems experience. Flange warping and gasket failures at exhaust connection points are among the most common exhaust leak sources on both stock and modified vehicles, as the thermal expansion differences between the flange material and the connected pipe cause progressive face distortion over time that breaks the gasket seal. Performance exhaust builders use thick-cut mild steel, stainless steel, or titanium flanges in precise O.D. profiles matched to their pipe diameter to ensure the clamping surface remains flat through hundreds of heat cycles. This collection c...
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