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1999–2006 Chevy/GMC 4.8L, 5.3L & 6.0L Vortec Cold Air Intake
Upgrade listed 1999–2006 Chevy and GMC trucks and SUVs equipped with a compatible 4.8L, 5.3L, or 6.0L Vortec V8. This Flashark 4-inch cold air intake replaces the factory airbox and corrugated intake hose with a polished aluminum tube, an oversized blue dry cotton filter, and a stamped-steel heat shield while retaining the factory MAF sensor.
Designed as a bolt-on Vortec intake upgrade, the kit provides a smoother airflow path, reusable dry filtration, sharper advertised throttle response, and a deeper induction sound under acceleration. Confirm your vehicle year, model, engine, and factory intake layout in the Fitment section before ordering.
Specifications
| Brand | FLASHARK |
|---|---|
| SKU | FLIS08104 |
| Product-page type | Cold Air Intake Kit |
| Configuration | Open-element, heat-shielded intake |
| Listed intake size | 4 inches / 101 mm |
| Tube | Lightweight mandrel-bent aluminum; polished finish; smooth internal bore |
| Filter | Oversized blue conical dry cotton-gauze filter; washable and reusable; no filter oil required |
| Heat shield | 4-inch stamped-steel heat shield |
| Installation | Bolt-on; uses factory mounting points; page lists no cutting or drilling and an average 45–60-minute installation with basic hand tools |
| Sensor arrangement | Reuses the factory MAF sensor; no spacer or adapter is required. |
| Warranty | 1-year Flashark warranty against listed material and manufacturing defects |
Key Features
- Direct replacement path: The kit replaces the factory enclosed paper-filter airbox and corrugated rubber intake hose with a smoother aluminum tube and conical filter, creating the more direct airflow path described by the product page.
- Advertised airflow area: The listed 4-inch tube is described as providing approximately 78% more cross-sectional area than the stock approximately 3-inch hose while maintaining a smooth path to the throttle body.
- Dry reusable filter: The oversized dry cotton-gauze filter is advertised to offer more surface area and flow more CFM than the stock flat paper panel. It requires no oil, removing the oil-overapplication risk near the MAF sensor.
- Stamped-steel heat shield: The shield helps separate the filter from radiant heat near the Vortec exhaust-manifold area and is intended to help preserve intake-charge density.
- Factory-sensor installation: The page lists reuse of the original MAF sensor, factory mounting points, no cutting or drilling, no required ECM reprogramming, and compatibility with stock and tuned configurations; correct installation remains essential to avoid leaks or sensor-related codes.
- Advertised performance: Flashark lists approximately 7–10% horsepower and 6–8% torque gains under favorable conditions; for a stock 5.3L rated at 295 hp and 330 lb-ft, the page translates that to approximately 21–30 hp and 20–26 lb-ft. Results vary with engine condition, exhaust flow, tuning, ambient temperature, and test method.
- Open-element intake sound: The filter and smooth tube are described as producing a deeper, more aggressive induction tone under acceleration, particularly at wider throttle openings, while remaining calmer during light cruising.
Stock Intake vs. Flashark Intake
The stock setup is described as a sealed plastic airbox with a disposable flat paper filter and a corrugated rubber hose that can retain heat under load. Flashark replaces those parts with a polished 4-inch aluminum tube, reusable conical filter, and steel heat shield for the listed vehicles.
- Airflow: The smoother, larger listed path is intended to reduce the restriction of the stock intake and deliver more air to the Vortec engine.
- Throttle response: Flashark advertises sharper low- and mid-range response for everyday acceleration, merging, passing, towing, and hauling.
- Sound: Removing the factory airbox's sound attenuation makes the V8 induction note more noticeable under acceleration.
- Maintenance and cost: The washable filter is designed to reduce repeated purchases of disposable paper filters and support long-term reuse with proper care.
The advertised result is a stronger intake sound, smoother airflow, quicker response, and added power and torque across compatible 4.8L, 5.3L, and 6.0L applications. Displacement and supporting modifications affect the final result: a stock 4.8L may emphasize response and sound, while a modified 6.0L with headers, exhaust, or tuning may make greater use of the additional airflow.
Who This Kit Is For
This kit is for owners of the listed 1999–2006 Chevrolet and GMC trucks and SUVs with compatible 4.8L LR4, 5.3L LM7/L59/LM4, or 6.0L LQ4/LQ9 Vortec V8 configurations. The product page also references selected Cadillac Escalade applications, which should be confirmed before ordering.
- Suitable for daily-driven, work, towing, and hauling vehicles when correctly installed and maintained.
- Suitable for buyers who want a reusable dry filter and a more audible V8 induction tone.
- Compatible with listed stock configurations and may be paired with compatible shorty headers, long-tube headers, cat-back exhaust systems, and other airflow upgrades.
- An optional professional tune may help optimize a combination of intake, exhaust, headers, camshaft, or other performance changes.
- The intake does not change the factory tow rating or replace proper cooling, gearing, brakes, or transmission maintenance.
- Browse Chevrolet and GMC Cold Air Intake Kits for other listed applications.
Check Before Ordering
- Vehicle: Verify the exact year, make, model, original engine, and the product-page fitment row rather than ordering by year or displacement alone.
- Modified vehicles: Engine swaps and previously modified intake systems require extra checks of intake routing, factory MAF location, couplers, PCV connection, and available clearance.
- Installation: Transfer the MAF in the correct airflow direction, secure the intake tube, filter, heat shield, PCV connection, and clamps, and check for leaks before starting the engine.
- Check-engine light: The page states a correctly installed system should not normally trigger a CEL. Common causes include a disconnected or incorrectly positioned MAF, loose coupler, unplugged PCV hose, or a post-MAF leak; scan stored codes before replacing parts.
- Filter service: Inspect and clean the dry filter approximately every 10,000–15,000 miles, or sooner on dusty or off-road routes. Let it dry fully and do not apply filter oil.
- Heat and water: Install the heat shield securely, maintain tube clearance, and position the filter near the factory fresh-air inlet area. Normal rain and wet-road driving are described as acceptable, but avoid deep water, pressure washing the exposed filter, and operating with a heavily soaked filter because water ingestion can cause severe engine damage.
- Compliance: Review the Compliance Notice below before purchase.
- More choices: Compare the Silverado and Sierra Cold Air Intake Kits.
Washable, Reusable Filter
The dry cotton filter is designed for long-term convenience and cost control. It can be cleaned and reused instead of replaced as frequently as a disposable stock paper filter, and proper care is intended to maintain airflow and performance over the life of the vehicle.
What's in the Box
- ✓ 4-inch polished aluminum intake tube
- ✓ Oversized blue conical dry cotton-gauze filter
- ✓ 4-inch stamped-steel heat shield
Customer installation content was shared from noahbalboa69 on TikTok.
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.
Confirmed compatible — 1999–2006 Chevy / GMC / Cadillac Vortec V8 (4.8L / 5.3L / 6.0L) (all trims, 2WD & 4WD):
| Year | Make | Model | Engine |
|---|---|---|---|
| 1999–2006 | Chevrolet | Silverado 1500 | 4.8L V8 / 5.3L V8 / 6.0L V8 |
| 2001–2006 | Chevrolet | Silverado 1500 HD | 6.0L V8 |
| 1999–2006 | Chevrolet | Silverado 2500 | 5.3L V8 / 6.0L V8 |
| 2001–2006 | Chevrolet | Silverado 2500 HD | 6.0L V8 |
| 2001–2006 | Chevrolet | Silverado 3500 | 6.0L V8 |
| 2000–2006 | Chevrolet | Suburban 1500 | 5.3L V8 / 6.0L V8 |
| 2000–2006 | Chevrolet | Suburban 2500 | 6.0L V8 |
| 2000–2006 | Chevrolet | Tahoe | 4.8L V8 / 5.3L V8 |
| 2002–2006 | Chevrolet | Avalanche 1500 | 5.3L V8 |
| 2003–2006 | Chevrolet | SSR | 5.3L V8 / 6.0L V8 |
| 2006 | Chevrolet | Trailblazer | 5.3L V8 / 6.0L V8 |
| 2003–2006 | Chevrolet | Trailblazer EXT | 5.3L V8 |
| 2003–2006 | Chevrolet | Cheyenne | 5.3L V8 |
| 2003–2006 | Chevrolet | Sonora | 5.3L V8 |
| 1999–2006 | GMC | Sierra 1500 | 4.8L V8 / 5.3L V8 / 6.0L V8 |
| 2001–2006 | GMC | Sierra 1500 HD | 6.0L V8 |
| 1999–2006 | GMC | Sierra 2500 | 5.3L V8 / 6.0L V8 |
| 2001–2006 | GMC | Sierra 2500 HD | 6.0L V8 |
| 2001–2006 | GMC | Sierra 3500 | 6.0L V8 |
| 2000–2006 | GMC | Yukon | 4.8L V8 / 5.3L V8 / 6.0L V8 |
| 2000–2006 | GMC | Yukon XL 1500 | 5.3L V8 / 6.0L V8 |
| 2000–2006 | GMC | Yukon XL 2500 | 6.0L V8 |
| 2003–2006 | GMC | Envoy | 5.3L V8 |
| 2003–2006 | GMC | Envoy XL | 5.3L V8 |
| 2004–2005 | GMC | Envoy XUV | 5.3L V8 |
1999–2006 Chevy/GMC Vortec Cold Air Intake FAQs
Q1: What vehicles does this Flashark cold air intake kit fit?
A1: This kit is listed for many 1999–2006 Chevy and GMC trucks and SUVs equipped with a compatible 4.8L, 5.3L, or 6.0L Vortec V8. The page also references selected Cadillac Escalade models. Always confirm the exact year, model, engine, and fitment row before ordering.
Q2: Does this cold air intake fit the 4.8L, 5.3L, and 6.0L Vortec engines?
A2: The page lists compatible 4.8L LR4, 5.3L LM7/L59/LM4, and 6.0L LQ4/LQ9 Vortec V8 applications. It serves as a cold air intake for 5.3 Vortec and 6.0 Vortec applications that retain the compatible factory MAF and intake layout.
Q3: Will this intake fit a 1999–2006 Chevy Silverado or GMC Sierra?
A3: It fits the Silverado and Sierra combinations shown in the Fitment table, including listed 1500, 1500 HD, 2500, 2500 HD, and 3500 applications. Engine availability varies by model and year, so verify the original engine before purchase.
Q4: Does this 2003 Chevy Silverado cold air intake fit the 5.3L Vortec?
A4: It is listed for compatible 2003 Silverado applications with a 4.8L, 5.3L, or 6.0L Vortec V8. Confirm the original engine, factory MAF position, intake routing, and vehicle selection, especially after an engine swap or previous intake modification.
Q5: Will this 2006 Silverado cold air intake fit my truck?
A5: The page lists compatible 2006 Silverado 1500, 1500 HD, 2500, 2500 HD, and 3500 applications with specified Vortec V8 engines. Verify the engine size and factory intake layout rather than relying on model year alone.
Q6: How much horsepower does a cold air intake add to a 5.3L Vortec?
A6: Flashark advertises approximately 7–10% horsepower and 6–8% torque gains under favorable conditions. Actual results depend on engine condition, exhaust flow, tuning, ambient temperature, installation, and testing method; response, airflow, and induction sound may be more noticeable than a specific peak number.
Q7: Will the results be different on a 4.8L or 6.0L Vortec?
A7: The advertised benefits are similar, but displacement and supporting modifications affect the final result. A stock 4.8L may emphasize response and sound, while a modified 6.0L with headers, exhaust, or tuning may use more of the available airflow.
Q8: Does this 5.3 Vortec cold air intake require a tune?
A8: The page states no tune is required for a normal bolt-on installation on a compatible stock vehicle that retains the factory MAF sensor. A custom tune is optional and may help optimize combinations with headers, freer-flowing exhaust, a camshaft, or other performance changes.
Q9: Will installing the intake cause a check engine light?
A9: A correctly installed intake should not normally trigger a check-engine light. Common causes include a disconnected or incorrectly positioned MAF, loose coupler, unplugged PCV hose, or an air leak after the MAF; check every connection and scan stored codes before replacing parts.
Q10: Does the kit reuse the factory MAF sensor?
A10: Yes, the page instructs owners to transfer the original MAF to the new intake assembly. Handle it carefully, install it in the correct airflow direction, keep the sensing element clean, and do not oil the included dry filter.
Q11: How does the Flashark intake compare with the stock Silverado air intake?
A11: It replaces the corrugated intake hose and enclosed paper-filter airbox with a smooth 4-inch aluminum tube, a larger conical dry filter, and a steel heat shield. The page describes a more direct airflow path, reusable filtration, a cleaner engine-bay appearance, and a deeper intake sound.
Q12: Will this intake make my Silverado, Sierra, Tahoe, or Yukon louder?
A12: Yes. The open-element filter and smooth tube make more V8 induction sound audible; the page describes calmer light cruising and a deeper, more aggressive tone as the throttle opens.
Q13: Will a cold air intake improve gas mileage on a 5.3 Vortec?
A13: MPG is dominated by driving habits; an intake alone can't guarantee a measurable gain. Tire size, gearing, vehicle weight, engine condition, towing load, and driving style can outweigh any change, and drivers may use more throttle to hear the intake.
Q14: How long does the cold air intake installation take?
A14: The product page lists an average installation time of approximately 45–60 minutes with basic hand tools. It uses factory mounting locations and is described as requiring no cutting or drilling; transfer the MAF carefully and secure the tube, filter, shield, PCV connection, and clamps.
Q15: Is the included air filter washable and reusable?
A15: Yes. Inspect and clean the dry cotton filter approximately every 10,000–15,000 miles, or more often on dusty roads or off-road routes. Let it dry fully before reinstalling it and do not apply filter oil.
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Every order comes with a 30-day free return, provided the item is brand new, uninstalled, and in its original packaging. We cover return shipping for quality issues. Refunds are processed within 3-5 business days. Click for Return Policy
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