K&N 77-3077KP Polished High-Flow Intake for 2011-2014 Chevy/GMC 2500/3500 HD 6.6

Vehicle Fitment

• 2011-2014 Chevrolet Silverado 2500 HD / 3500 HD (6.6L V8 Duramax, RWD/4WD)
• 2011-2014 GMC Sierra 2500 HD / 3500 HD (6.6L V8 Duramax, RWD/4WD)

Features

• Mandrel-bent polished aluminum intake tube for maximised airflow
• Oversized washable/reusable oiled cotton gauze high-flow air filter media
• Includes heat shield to protect filter from engine-bay heat (factory airbox space replacement)
• Guaranteed horsepower increase (approx. +12.19 HP) and torque increase (approx. +24.7 lb-ft) under test conditions
• Direct-fit replacement of the factory air filter and intake tube - bolt-on installation
• No engine tuning required for basic installation
• Filter requires service only up to ~100,000 miles under normal highway conditions
• Street-legal in all 50 U.S. states - CARB Executive Order D-269-49 (verify specific year/engine)

Specifications

• Weight: ~13.5 lb (6.1 kg)
• Intake tube material: Aluminium, bright mirrored finish
• Filter media: Oiled cotton gauze, red colour
• Clamps included: 4x stainless-steel regular style
• Couplers included: None (design uses direct fit/heat-shield mount)
• CARB Executive Order number: D-269-49
• Typical installation time: ~60-90 minutes with basic hand tools

Included Components

• 1x Polished aluminum intake tube
• 1x High-flow red oiled cotton gauze air filter
• 1x Heat shield assembly (factory airbox replacement style)
• 4x Stainless-steel hose clamps
• All required mounting hardware and brackets for the listed applications

Product Description

The K&N 77-3077KP Polished High-Flow Intake Kit is engineered specifically for heavy-duty GM trucks equipped with the 6.6 L V8 Duramax engine in the 2500 HD / 3500 HD series from 2011 through 2014. By replacing the restrictive factory air-filter housing and intake path with a smooth mandrel-bent polished aluminum tube and oversized reusable high-flow filter, this kit enhances airflow, throttle response, and engine performance.

Installation is designed to be straightforward, typically completed in about an hour to 90 minutes using standard hand tools. The washable filter element offers long maintenance intervals, reducing long-term cost and downtime. The kit comes with a heat shield to maintain lower intake air temperatures and is certified for street use under CARB Executive Order D-269-49 for many states.

Ideal for owners of Silverado 2500/3500 HD and Sierra 2500/3500 HD trucks who demand a reliable, bolt-on performance upgrade without modifying other engine systems. With gains in horsepower and torque, improved throttle response under load, and durable construction, the 77-3077KP is a strong choice for both towing and everyday driving performance. Always confirm exact engine size (6.6 L Duramax) and drivetrain (RWD/4WD) before purchase.