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Wanmax Racing
3-Port 4-1 UEL Header for Toyota 86 GR86 Subaru BRZ FA20 FA24
$299.00
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CODE: WM-TOYOTA-86-GR86-SUBARU-BRZ-FRS-FA20-FA24-3B-UEL-HDR
Categories: Exhaust Header
100% ORIGINAL AND QUALITY
24 MONTHS GUARANTEE
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DESCRIPTION
This direct bolt-on 4-1 unequal length (UEL) exhaust header manifold is engineered for Toyota GT86/GR86, Subaru BRZ and Scion FR-S with FA20/FA24 boxer engines.
The optimized unequal length tube design improves exhaust gas scavenging, delivers the iconic deep boxer rumble exhaust tone, and brings sharper throttle response. Equipped with 3 O2 sensor bungs for wideband tuning compatibility, perfect for both daily street driving and weekend track use.
This performance UEL header is constructed from premium T304 stainless steel with a mirror polished surface. The 4-2-1 unequal length tube layout balances exhaust pulse flow for the flat-four boxer engine, minimizing exhaust interference. CNC precision machined flanges ensure perfect sealing surface. Full professional TIG welding eliminates exhaust leaks. All factory mounting points are reserved for hassle-free bolt-on installation without cutting or modification. The extra O2 sensor bung supports advanced wideband tuning configurations, making it a versatile upgrade for stock and modified setups.
VEHICLE FITMENT
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GT86 / BRZ 100% Fitment List
Engine:2.0L FA20 H4
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Make
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Model
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Chassis Code
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Year Range
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Transmission
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For Toyota
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86 / GT86 (Pre-facelift)
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ZN6
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2012–2016
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6MT / 6AT
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For Toyota
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86 / GT86 (Facelift)
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ZN6
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2017–2021
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6MT / 6AT
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For Toyota
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GR86
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ZN8
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2022–Present
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6MT / 6AT
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For Subaru
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BRZ (1st Gen Pre-facelift)
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ZC6
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2012–2016
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6MT / 6AT
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For Subaru
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BRZ (1st Gen Facelift)
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ZC6
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2017–2020
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6MT / 6AT
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For Subaru
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BRZ (2nd Gen)
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ZD8
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2021–Present
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6MT / 6AT
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For Scion
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FR-S (North America)
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ZN6
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2013–2016
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6MT / 6AT
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KEY FEATURES
- 3 pre-drilled O2 sensor bungs, compatible with both factory and wideband oxygen sensors, perfect for stage ECU tuning.
- Unequal length runner design, delivers classic deep boxer rumble sound for FA20/FA24 flat-four engine.
- Optimized 4-1 merge collector reduces exhaust backpressure, improves throttle response and power output across full RPM range.
- Full mirror polished T304 stainless steel construction, anti-high temp oxidation, long service life.
- Full penetration TIG welding ensures weld seam strength, prevents exhaust leakage under long-term high load.
- 100% OEM matching bolt-on design, direct replacement without cutting, bending or modification.
TECH SPECIFICATIONS
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Product Type: Performance Unequal Length Exhaust Header Manifold
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Main Material: T304 Stainless Steel
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Surface Treatment: Mirror polished stainless steel
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Tube Structure: 4-1 unequal length (UEL) runner design
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Sensor Interface: 3 pre-welded O2 sensor bungs
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Connection Method: Flange-to-flange connection
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Welding Type: TIG tungsten-inert-gas full penetration welding
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Applicable Engine: 2.0L FA20 / 2.4L FA24 Naturally Aspirated Boxer
- Applicable Year: 2012-2024
WHAT'S IN THE BOX
1 x Complete UEL exhaust header manifold assembly
Full Set OEM Matching Installation Gaskets & Hardware Kit
Professional Installation Notes & Tips
Why Choose This 3-Bung Kit?
Zero Hassle Tuning: The pre-installed 3rd M18x1.5 bung is a game-changer for tuning shops. Directly connect your Innovate, AEM, or PLX wideband gauge sensor. No shop labor costs for custom fabrication.
Perfect Fitment Guarantee: Laser-cut heavy-duty flanges ensure 100% warp-free alignment with your OEM engine studs and factory cat-back systems.
Track-Tested Durability: Fully back-purged TIG welds ensure structural integrity under the high heat of track racing.
Warranty & Shipping Protection:
12-Month Structural Warranty: We offer a 1-year warranty against any weld cracking or manufacturing defects under normal operating
conditions.
Export-Grade Safe Packaging: Each header is individually wrapped in high-density thick bubble wrap and secured within a heavy-duty double-wall corrugated carton to prevent any flange deformation during international transit.
