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SKU: BXFL-00017
BLOX Racing T3 & T4 Dual Pattern Inlet Flange - Open for 1988-2005 Honda Civic 1990-2001 Integra 1992-2006 Prelude BXFL-00017
BLOX Racing T3 and T4 dual pattern inlet flange in open design supports custom turbo manifold fabrication for high performance engines. This flange fits universal custom turbo builds and popular Honda chassis like 1988-2005 Civic EF EG EK EP EM ES, 1990-2001 Integra DA DB DC, 1992-2006 Prelude BA BB BC. Precision machined for seamless T3 or T4 turbo integration it delivers reliable gasket sealing unrestricted airflow quicker spool times and substantial power gains in racing applications.
Key Features
- Dual Pattern Design: Matches T3 3.85 inch and T4 4.00 inch inlet bolt patterns for broad turbo compatibility using one versatile flange
- Open Scroll Layout: Promotes maximum exhaust flow without internal dividers for quicker spool times and increased power output
- A36 Mild Steel Construction: Withstands extreme high temperatures and pressure in demanding turbocharged applications
- Precision CNC Machining: Guarantees perfectly flat mating surfaces and exact hole alignment to eliminate leaks and boost reliability
- Flange Dimensions: 3.85 inch T3 pattern 4.00 inch T4 pattern with 2.5 inch inner diameter for seamless standard piping integration
Product Notes
- Designed for welding to custom tubular or cast turbo manifolds
- Inspect gasket surface before use for optimal sealing
- Handle with care to avoid surface scratches during shipping
Installation Notes
- Professional installation recommended.
- Weld flange to manifold using TIG method for strongest bond
- Compatible with standard T3 T4 gaskets and V-band or bolt-down housings
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Various | Custom Turbo Builds | T3 T4 Inlet |
| 1988-2005 | Honda | Civic | EF EG EK EP EM ES |
| 1990-2001 | Honda | Integra | DA DB DC |
| 1992-2006 | Honda | Prelude | BA BB BC |
Why Choose BLOX Racing?
- Proven track record in JDM racing components
- Focus on durable materials for motorsport demands
- Expert CNC processes for repeatable quality
Frequently Asked Questions
-
Q: Does this flange fit both T3 and T4 turbos?
A: Yes dual pattern precisely matches both T3 3.85 inch and T4 4.00 inch inlet bolt layouts for versatile use -
Q: What material is the flange made from?
A: High temperature A36 mild steel offers strength and heat resistance for turbo environments -
Q: Is welding required for installation?
A: Yes weld to manifold with TIG for secure attachment professional fab recommended
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective foam insert in 8 x 8 x 2 inch box
- Weight: 1.8 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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