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What the 97490-1F000UB duct does

The Side Air Vent Duct PASSENGER RH, part number 97490-1F000UB, is the right-side outer dashboard vent duct for the first-generation Kia Sportage, model years 2005-2010. It carries conditioned air from the HVAC box to the passenger-side vents. When the original duct cracks or collapses, airflow on that side drops and the dash starts to whistle.

The replacement is injection-molded from ABS/PP thermoplastic in the beige variant (UB suffix), matching the Kia factory color code "Outer, Beige". Installation needs no wiring and no coding, because the part is a passive molded duct that snaps into the existing dashboard cavity. You can order it from the Side Air Vent Duct PASSENGER RH (97490-1F000UB) product page on Koeep.

Key specifications and 2026 compliance

Material is ABS/PP thermoplastic composite with UV-stabilized pigment. Heat deflection temperature is ≥95°C at 0.45 MPa, above the SAE J1717 Class B interior trim threshold. The working range is -30°C to +95°C.

UV stabilization survives 1,000+ hours of xenon-arc exposure under SAE J2412, the test that predicts dashboard yellowing. Mold shrinkage is ≤0.4%, so the duct snaps in without trimming. Fitment tolerance is ±0.5mm, reverse-engineered from OEM CAD data.

Since the duct is passive plastic, it adds no electrical noise and stays transparent to CAN 2.0A/B and CAN FD 3.0 diagnostics per ISO 11898-1/2. Nothing on the vehicle network changes when you install it.

Material build: why ABS/PP matters in 2026

Precedence Research (2026) values the global automotive interior materials market at USD 65.73 billion in 2025, growing at a 3.9% CAGR through 2035. Kia, Hyundai, Toyota, and Ford now specify ABS/PP hybrid ductwork for 2026+ platforms under their lightweighting programs, and this replacement uses that same material family.

Recycled content and end-of-life rules

The duct blends post-industrial recyclate into virgin ABS/PP and reaches ≥25% recycled content. That aligns with the EU ELV Directive 2000/53/EC and the 2026 OEM sustainability targets for non-structural interior parts.

Comparable programs are already shipping at the OEM level: Ford uses ocean-recovered plastics in F-150 Lightning interior trim, GM uses recycled PET headliners on the Ultium platform, Toyota uses plant-derived polypropylene in the bZ4X, and Tesla's Model Y dashboard uses a mono-material design for end-of-life recyclability.

How 16-21 year old ducts fail

By 2026 your Sportage dashboard has been through two decades of heat cycles. Four failure patterns show up first:

• UV embrittlement: sun exposure degrades the ABS polymer, and micro-cracks spread into full splits during thermal cycling.
• Clip fatigue: snap-fit tabs lose retention force, so the duct vibrates loose from the dashboard substructure.
• Foam seal degradation: the gasket at the duct-to-HVAC-box junction leaks air, which mimics blower motor failure.
• Bio-contamination: in humid climates, debris inside a cracked duct supports mold growth and persistent cabin odor.

The Koeep replacement covers all four with fresh material, new clips, integrated foam seals, and antimicrobial-grade polymer.

DTC mapping: how a plastic duct sets trouble codes

The duct carries no electronics, yet it can still put codes on the scanner. A collapsed or obstructed duct raises the torque load on the mode door actuator, and the HVAC module logs that as a range or feedback fault. Check duct integrity before you replace the mode door actuator, Kia P/N 97124-1F200.

Two code families matter most. The B1441-B1449 range (Air Mix Damper Control Servo Motor Circuit) and the B2401-B2410 range (Vent Mode Actuator Feedback Circuit) are frequently blamed on a failed actuator when the real cause is a blocked duct. The wider map:

OEM vs Koeep vs generic: full comparison

A genuine Kia duct runs $60-$90 at the dealer. Generic units sell for $12-$25, and the trade-offs show up in heat tolerance, color match, and service life. The table puts the three options side by side.

Check current 97490-1F000UB pricing

Symptoms: when the passenger duct is the problem

Five indicators point at the duct instead of the blower or the actuator:

1. Airflow from the passenger-side vent is weak or absent while the blower motor runs normally.
2. Whistling or hissing behind the dash at medium-to-high fan speed, a sign of a cracked duct body.
3. Cabin temperature is uneven, with the passenger side consistently warmer or cooler than the driver side.
4. Clicking or popping when you cycle vent, floor, and defrost modes suggests the duct has separated from the mode door housing.
5. The visible vent grille shows cracking, warping, or UV brittleness.

A borescope passed through the vent opening shows internal duct integrity without full dashboard disassembly, which is standard in 2026 diagnostic workflows.

Parts that pair with this repair

The RH duct 97490-1F000UB and the LH duct 97480-1F000UB are mirror-image components. Mounting clip orientation and duct curvature differ, so they are not interchangeable. Koeep recommends replacing both sides at the same time for uniform airflow and color match, and the full vent range sits in the Koeep auto and motorcycle parts catalog.

If the cabin refresh goes further, the Top Leather Steering Wheel Hand-stitch on Wrap Cover for Kia K5 Sportage KX5 restores the other high-touch surface that ages in these interiors.

Outside the cabin, a failed Bumper PDC Parking Sensor (95720-3W100) for Hyundai and Kia Sportage 2.0L and 2.4L is another common age-related fix on this platform. For the cross-reference method on cooling parts, see the 2026 thermostat housing OEM cross-reference guide for Santa Fe, Tucson, Sonata, Sportage, Optima, and Sorento.

Cross-references and service life

OEM cross-references: 974901F000UB (Kia Genuine), 97490-1F000UB (Kia Parts Catalog), and 974901F000WK for the gray variant. The UB suffix is beige, so if your dash is gray, match the color code before you order.

Under normal operating conditions (-30°C to +95°C ambient, ≤85% RH), the Koeep duct carries a projected 5+ year service life spanning 2026-2030. Standards coverage includes SAE J1717 for interior plastic testing, SAE J2412 for xenon-arc weathering, ISO 11898-1/2 for CAN physical layer transparency, and ASTM B912 where surface passivation applies. Current fitment data and pricing live on the official 97490-1F000UB product page.

FAQ: 97490-1F000UB diagnosis and fitment