Spectre Air Duct Hose Kit 3in. - Black - 8741

The Spectre Air Duct Hose Kit 3in. Black (Part #8741) is a flexible, universal-fit air duct solution built for enthusiasts who want to route cooler, denser air directly to an airbox inlet, plenum, intake tube, or mounting plate. Whether you're piecing together a custom cold air intake, relocating an existing airbox, or simply replacing a cracked or collapsed OEM duct, the Spectre 8741 delivers a clean, purpose-built option that works with any 3-inch outside-diameter intake system. This is a universal kit, meaning it adapts to a wide range of applications rather than being vehicle-specific — making it a popular go-to for builders, fabricators, and everyday DIYers alike.

Key Features & Benefits

• Flexible polypropylene construction — The duct hose is made from polypropylene, a material known for its resistance to heat, moisture, and cracking. Flexibility lets you conform the hose to tight engine bays without kinking or collapsing the airflow passage.
• 3-inch outside diameter — Sized to attach directly to airbox inlets, plenums, intake tubes, and mounting plates with a 3-inch opening. This is one of the most common intake duct diameters across domestic and import vehicles, giving this kit broad versatility.
• 28 inches of total duct length — At 28 in. (711 mm) of working length, you have generous material to route the hose around obstacles, reach a cold-air source, or span the distance between your airbox and filter location.
• Two included threaded PVC couplers — The kit ships with a pair of couplers that allow you to secure each end of the duct hose to your inlet and outlet points, creating a leak-resistant connection without relying solely on clamps or tape.
• Universal design for custom builds — Because it's not vehicle-specific, this hose works for everything from custom cold air intake builds to replacement ducting on modified engine bays. If you're building something one-off, this kit saves significant time over fabricating ductwork from scratch.
• Black finish — The black coloring provides a clean, factory-compatible appearance under the hood without the industrial look of bare corrugated tubing.

Specifications

• Brand: Spectre Performance
• Part Number: 8741
• Material: Polypropylene
• Color: Black
• Duct Length: 28 in. (711 mm)
• Outside Diameter: 3 in. (76 mm)
• Proposition 65: Yes — this product carries a California Prop 65 warning
• CARB Legal: This product is not CARB legal and is not for sale in California

Fitment

The Spectre 8741 air duct hose kit is a universal-fit component — it is not designed to bolt directly onto a specific year, make, or model. It fits any intake application using a 3-inch outside diameter connection point, including aftermarket cold air intake systems, custom airbox setups, and performance intake builds across cars, trucks, and SUVs. If your intake system uses 3-inch ducting and you need flexible hose material, this kit is designed to work. Verify the 3-inch OD matches your existing inlet, coupler, or airbox opening before purchasing. Not for sale in California (not CARB compliant).

What's in the Box

• 1× Flexible air duct hose (28 inches / 711 mm length, 3-inch OD)
• 2× Threaded PVC couplers

Why Buy from ThreePiece.us

ThreePiece.us has been serving performance and fitment-focused enthusiasts since 2014, with over 10,000 customers helped by a team that knows how to match parts to builds. When you shop here, you get free shipping on every order — no minimum required. Need help confirming this duct works with your existing intake setup? Reach out to our fitment specialists via email at [email protected] or by phone — we're here to verify compatibility and answer build questions before you buy. Financing is available through Affirm, so you can check out now and pay over time on your schedule. With straightforward ordering and expert support behind every purchase, ThreePiece.us is the right place to source your Spectre performance parts.

Frequently Asked Questions

Q: What vehicles does the Spectre 8741 fit?

A: This is a universal-fit air duct hose kit, not vehicle-specific. It fits any intake system with a 3-inch outside diameter connection point. That includes a wide range of aftermarket cold air intakes, custom airbox builds, and performance intake systems across cars, trucks, and SUVs. Confirm your existing inlet or coupler uses a 3-inch OD before ordering.

Q: What's included with the Spectre 8741 kit?

A: The kit includes one flexible air duct hose measuring 28 inches (711 mm) in length with a 3-inch outside diameter, plus two threaded PVC couplers for securing the duct to your inlet and outlet points.

Q: Can I use this duct hose in California?

A: No. The Spectre 8741 is not CARB (California Air Resources Board) legal and is not available for sale in California. Customers in all other U.S. states can purchase this product.

Q: Does ThreePiece.us offer financing or free shipping on this item?

A: Yes on both counts. Free shipping is included on every order, and financing is available through Affirm at checkout so you can spread the cost over time.