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Upgrade your vehicle's airflow with the K&N 57-3048 performance cold air intake system designed specifically for 2003-2004 Chevrolet Trailblazer EXT and GMC Envoy XL models equipped with V8 5.3L engines. Crafted from durable high-density polyethylene (HDPE) through rotational molding, this intake system significantly increases the volume of air reaching your engine, resulting in a guaranteed boost in horsepower and torque. The system features an oversized, conical, washable, and reusable High-Flow Air Filter with oiled cotton media, capable of lasting up to 100,000 miles under normal highway conditions without the need for replacement. This enhances engine performance while reducing maintenance requirements. A custom heat shield is integrated to prevent intake air from being heated by the engine bay, ensuring cooler, denser air intake for optimal combustion efficiency. Installation typically takes less than 90 minutes, making it a convenient upgrade for enthusiasts seeking immediate performance gains. The K&N intake system is compliant with EPA standards and protected by the No-Hassle Lifetime Limited Warranty, providing peace of mind and durability. Please note that some models may not be legal for sale or use in California on pollution-controlled vehicles; verify CARB status for your specific vehicle to ensure compliance. This system is a reliable choice for drivers aiming to maximize engine output and enhance overall vehicle performance. The kit's robust construction and proven design make it suitable for daily driving and performance tuning alike, delivering consistent, high-quality results. Improve your vehicle's airflow, power, and efficiency with the trusted name in performance air intake systems, K&N Engineering.
Features:
Fitment:
2003 Chevrolet Trailblazer EXT LS
2003 Chevrolet Trailblazer EXT LT
2003 Chevrolet Trailblazer EXT North Face
2003 GMC Envoy XL SLE
2003 GMC Envoy XL SLT
2004 Chevrolet Trailblazer EXT LS
2004 Chevrolet Trailblazer EXT LT
2004 Chevrolet Trailblazer EXT North Face
2004 GMC Envoy XL SLE
2004 GMC Envoy XL SLT
2004 GMC Envoy XUV SLE
2004 GMC Envoy XUV SLT
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
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Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
