1999–2003 Ford 7.3L Powerstroke Cold Air Intake Kit for F-250 and F-350 Super Duty
A bolt-on cold air intake kit that replaces the factory airbox and intake tube on 1999–2003 Ford F-250 and F-350 Super Duty trucks equipped with the 7.3L Powerstroke diesel. The intake pipe relocates the filter outside the engine compartment for cooler, denser inlet air and a deeper intake tone under acceleration. Built around a T-304 aluminum pipe and a washable dual-layer cotton cone filter, the kit is designed to retain the factory MAF and IAT sensor position and bore so the engine bay reconnects with the stock harness and mounts — no tuning required on a stock truck. Sold under SKU FLIS26008.
Specifications
| SKU | FLIS26008 |
| Product Type | Cold Air Intake Kit (filter relocated outside the engine compartment) |
| Vehicle Fitment | 1999–2003 Ford F-250 and 2000–2003 Ford F-350 Super Duty with 7.3L Powerstroke diesel (445 cu in V8 OHV turbocharged) |
| Tube Material | T-304 aluminum, polished finish |
| Filter | Washable, reusable dual-layer pleated cotton cone filter with filter oil |
| Filter Service Interval | Inspect at every oil change; clean and re-oil up to every 100,000 miles under ideal conditions (sooner in dust, dirt, or farm use) |
| Sensor Compatibility | Designed to retain factory MAF and IAT sensor mounting location and bore |
| Installation | Bolt-on with common hand tools; no tuning required on a stock truck |
| Color / Finish | Black hardware and hardware finish |
| Compliance (California / CARB) | Not legal for sale or use in California and other CARB-adopting states — see the Compliance Notice below. Diesel exhaust and engine intake configurations may be subject to additional local and federal inspection rules; consult your state program for guidance specific to your vehicle. |
| Price (USD) | $129.88 (single SKU, in stock) |
| Variant | Default Title — single SKU, no separate color or finish option |
Key Features
- T-304 aluminum intake pipe: a rigid, corrosion-resistant airflow path that replaces the factory intake tube and lets inlet air reach the turbo inlet with less restriction than the stock plastic and rubber routing.
- Filter relocated outside the engine compartment: the cone filter sits in cooler, denser outside air rather than inside the hot engine bay, which is the design intent of a true cold air intake on a stock 7.3 Powerstroke.
- Washable dual-layer cotton cone filter: reusable and serviced rather than thrown away; under ideal conditions the filter can be cleaned and re-oiled up to every 100,000 miles, sooner in dusty conditions, so you replace far fewer disposable filters over the truck's life.
- Bolt-on install with common hand tools: the kit is engineered as a direct replacement for the factory airbox and intake tube; no fabrication, no drilling, and no tuning required on a stock truck.
- Factory MAF and IAT sensor position and bore retained: the stock mass-airflow and intake-air-temperature sensors are reused in their original locations, which keeps the inlet tract inside the OEM calibration envelope on a stock truck.
- Deeper intake tone under acceleration: replacing the enclosed factory airbox with the cone filter and aluminum pipe typically makes turbo whistle and induction sound more noticeable under acceleration; at steady cruise it quiets down.
- All mounting hardware and brackets included: clamps, couplers, brackets, and the install guide come in the box so the kit is the only part you need on the bench.
Who this kit is for
This cold air intake kit is engineered for 1999–2003 Ford F-250 and 2000–2003 Ford F-350 Super Duty trucks powered by the 7.3L Powerstroke V8 turbo-diesel. Browse our Ford Cold Air Intake Kits, Ford F-250 Cold Air Intake Kits, and Ford F-350 Cold Air Intake Kits collections for sibling and platform PDPs.
For you if… you tow or haul in summer heat and want cooler inlet air at the turbo · you'd rather service a washable cotton filter than keep buying disposable paper ones · you want a bolt-on upgrade that does not require a tune on a stock truck · you've confirmed the emissions rules for your state below.
Not for you if… your truck is a 1999 F-350, a 1994.5–1997 OBS F-Series, or any 6.0L Powerstroke — this kit is not listed for those platforms · you plan deep-water crossings without a filter-relocation plan · you're in California or a CARB-adopting state and need an EO-stamped SKU — see the Compliance Notice below · you expect a guaranteed MPG gain — see FAQ on fuel economy.
Check before ordering
- Vehicle match: confirm year, model, and that the engine is the 7.3L Powerstroke (not IDI or 6.0L). Cross-check against the Fitment table above; for Super Duty F-350 or any year not on the exact-fit list, message us with your VIN before paying.
- Intake type: this kit is a sealed-engine-bay-replacement cold air intake with the filter relocated outside the engine compartment — not an open short-ram intake. If you want the loudest possible induction sound, a short ram would fit your goal better.
- Filter maintenance: the included cone filter is oiled cotton — it requires periodic cleaning and re-oiling. If you'd rather not service the filter, consider a dry-element alternative instead.
- MAF / IAT and tune: the kit is designed to retain the factory MAF and IAT sensor position and bore, so no tuning is required on a stock truck. If your truck already runs an aftermarket tune, larger injectors, or a modified turbo, confirm sensor and pipe sizing with our team before ordering.
- Legality: this SKU does not currently carry a CARB Executive Order number and is not legal for sale or use in California or other CARB-adopting states. See the Compliance Notice below before ordering if you live in one of those states.
- Install space and water exposure: the kit is bolt-on with common hand tools, but the filter is mounted in the engine bay area — avoid deep-water crossings and pressure-washing the filter directly. For regular water crossings, consider a high-mounted or relocation setup.
What's in the box
- ✓ T-304 aluminum intake pipe (polished, black hardware)
- ✓ Washable dual-layer pleated cotton cone air filter (oiled)
- ✓ Silicone coupler(s) and stainless hose clamps
- ✓ Mounting brackets and hardware kit
- ✓ Installation guide
The factory MAF and IAT sensors are reused from your existing intake system and are not included in the kit.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
Compliance Notice
Not legal for sale or use in California (and other CARB-adopting states). This cold air intake kit (SKU FLIS26008) does not currently carry a CARB Executive Order number. Emissions and inspection rules vary by state, county, and year — including for diesel-powered trucks — so confirm local requirements before installing this part on a vehicle registered in California, Colorado, Connecticut, Delaware, Maine, Maryland, Massachusetts, New Jersey, New Mexico, New York, Oregon, Pennsylvania, Rhode Island, Vermont, Virginia, Washington, or any other jurisdiction that adopts California Air Resources Board standards. Because this disclosure applies to the legal use of the product, not to its mechanical install, it appears at the bottom of the page rather than at the top, alongside the FAQ where legality questions are answered.
- 1999 Ford F-250 Super Duty Powerstroke 7.3L 445Cu. In. V8 DIESEL OHV Turbocharged
- 2000 Ford F-250 F-350 Super Duty Powerstroke 7.3L 445Cu. In. V8 DIESEL OHV Turbocharged
- 2001 Ford F-250 F-350 Super Duty Powerstroke 7.3L 445Cu. In. V8 DIESEL OHV Turbocharged
- 2002 Ford F-250 F-350 Super Duty Powerstroke 7.3L 445Cu. In. V8 DIESEL OHV Turbocharged
- 2003 Ford -F250 F-350 Super Duty Powerstroke 7.3L 445Cu. In. V8 DIESEL OHV Turbocharged
1999–2003 Ford 7.3L Powerstroke Cold Air Intake FAQs
Q1: Is this cold air intake legal in my state?
A1: Not legal for sale or use in California (and other CARB-adopting states). This kit does not currently carry a CARB Executive Order number. Always confirm your state, county, and local emissions and inspection rules before installing this part, especially on a diesel-powered truck in a CARB-adopting state.
Q2: Will this cold air intake fit my Ford Super Duty?
A2: It's an exact fit for the 1999 Ford F-250 Super Duty and 2000–2003 Ford F-250 Super Duty with the 7.3L Powerstroke. For 2000–2003 F-350 Super Duty trucks, please confirm pipe routing, mounting points, and engine-bay layout with our support team before ordering. The 1999 F-350, the 1994.5–1997 OBS F-Series, and any 6.0L Powerstroke are not on the current fitment list.
Q3: How much horsepower will this add to a 7.3 Powerstroke?
A3: Real-world gains depend heavily on the condition of your engine, turbo, fuel calibration, and supporting modifications. For a stock 7.3 Powerstroke, most of the perceived benefit shows up as throttle response and intake sound rather than a large peak-power increase. We do not publish a fixed horsepower number for this SKU because we have not published a controlled dyno test for this platform — treat any specific "+HP" number as platform-dependent and tune-dependent.
Q4: Will a cold air intake improve my fuel economy on a 7.3 Powerstroke?
A4: MPG is dominated by driving habits, vehicle weight, gearing, tire size, injector condition, boost leaks, driving speed, towing load, and throttle use. An intake alone can't guarantee a measurable MPG gain on a stock truck, and some owners see no change because they accelerate harder after installing the intake. Treat any fuel-economy claim for an intake as unverified on this platform.
Q5: Will this void my factory warranty?
A5: Under the Magnuson-Moss Warranty Act, an aftermarket part cannot void your factory warranty unless the manufacturer proves the part caused the failure. This kit is designed as a direct bolt-on replacement that keeps factory sensors and connections in their stock locations, so it should not by itself create a warranty issue. Always confirm warranty terms with your dealer if you've made other modifications.
Q6: Will this throw a check engine light (CEL)?
A6: This kit is designed to retain the factory MAF and IAT sensor position and bore, which keeps the MAF calibration within the OEM design envelope. A CEL after install is usually the result of an intake leak, an over-oiled filter, or a sensor that wasn't reseated fully — re-check every clamp and coupler, lightly re-oil the filter, and clear the code before assuming the kit itself is the cause.
Q7: Do I need a tune after installing this kit?
A7: No tune is required for a bolt-on install that retains the factory MAF and IAT sensor position and bore on a stock 7.3 Powerstroke. Custom tuning becomes useful only when the truck also runs upgraded injectors, a modified turbo, higher oil pressure, or other performance modifications.
Q8: Is this safe in rain, snow, or deep water?
A8: Normal rain and snow are fine when the filter is securely mounted and the factory splash protection is intact. Avoid deep-water crossings and direct pressure-washing of the filter — water ingestion can cause hydrolock and severe engine damage. If you regularly ford water, plan a high-mounted filter relocation before going deep.
Q9: How do I clean and re-oil the filter?
A9: Use a dedicated oiled-cotton cleaner per the kit instructions, rinse with water, let the filter air-dry fully (no compressed air, no direct sunlight), then apply a uniform light coat of oiled-cotton recharge oil — not wet enough to drip. Over-oiling can coat the MAF sensor and contaminate the inlet tract, so follow the instructions and inspect the filter every oil change.
Q10: What does this intake sound like?
A10: Replacing the enclosed factory airbox with the cone filter and aluminum pipe usually makes turbo whistle and engine induction sound more noticeable under acceleration, while steady highway cruise stays comparatively quiet. Sound is subjective — if you want the loudest possible induction note, an open-element short-ram intake would suit that goal better than this sealed cold-air kit.
Q11: What does the kit include, and what do I still need?
A11: The kit includes the T-304 aluminum intake pipe, the oiled dual-layer cotton cone filter, silicone coupler(s) and stainless hose clamps, mounting brackets and hardware, and the installation guide. The factory MAF and IAT sensors are reused from your existing intake system — they are not included. You will need basic hand tools; no tune or specialty fabrication is required on a stock truck.
Q12: What should I check if my truck runs poorly after installation?
A12: Walk the entire intake path: confirm every clamp is tight, no coupler is collapsed, no install debris is inside the tube, no unfiltered-air gap, and that no wiring or vacuum line was disturbed. A whistling leak, reduced boost response, excessive smoke, or unusual turbo sound usually points to a connection that is not fully sealed. Re-check these before assuming the kit is incompatible with your truck.
Q13: Why does the filter sometimes pull warm air at idle or low speed?
A13: An exposed cone filter can pull some warm underhood air when the truck is stationary or moving slowly. Once the truck is moving, airflow through the engine compartment reduces that effect. Confirm the filter is positioned away from hot engine components and that any included shield or mounting panel is in place to limit heat soak.
Q14: Does this kit work on a stock 7.3 Powerstroke, and is it worth it?
A14: Yes — and the value depends on your goal. On a stock truck, the kit delivers easier filter servicing, a stronger turbo sound under acceleration, an improved engine-bay appearance, and less restrictive intake plumbing. The biggest gains appear when the truck is later paired with tuning, exhaust upgrades, larger injectors, or increased turbo airflow demand — on a totally stock truck, expect intake sound and throttle response, not a transformed peak-power number.