Wehrli

Wehrli 20-24 Chevrolet 6.6L LP5 Duramax 4in Intake Kit Stage 2 - Gloss White - WCF100684-GW

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SKU:
WCFWCF100684-GW
UPC:
WCF100684-GW
MPN:
WCF100684-GW
Availability:
Regularly stocked product
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MSRP: $859.00
$833.23
— You save $25.77
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Description

What is the primary benefit of a Cold Air Intake?
Cold Air Intakes deliver cooler, denser air to the engine, directly increasing horsepower and torque for a significant performance boost.

How does a Cold Air Intake improve acceleration?
This Cold Air Intake achieves a smoother, more responsive throttle by providing a less restrictive airflow path for effortless acceleration.

The Wehrli WCF Intake Kit Stage 2 is engineered for 2020-2025 Chevrolet Silverado and GMC Sierra 2500/3500 HD trucks, delivering significant engine performance gains. Its massive four inch diameter fabricated aluminum intake pipe and air box enclosure ensure cooler, denser air. Unleash your truck's full potential with this premium Cold Air Intake system.

What Owners Say

Owners and enthusiasts consistently praise Wehrli's intake components for delivering noticeable performance improvements, with users reporting better throttle response and meaningful gains when paired with quality cold air intakes and supporting mods. The Stage 2 kit's intake horn and boost tubes are frequently mentioned alongside premium brands like S&B and Banks in successful LP5 builds, suggesting strong fitment and compatibility. Diesel owners appreciate the real-world driveability improvements and modest fuel economy gains, though some note that maximizing benefits may require complementary upgrades like tuning. Wehrli Fab has earned its reputation among the Duramax and Cummins communities as a trusted name for quality bolt-on intake system upgrades.

Key Features

  • fabricated aluminum intake pipe
  • air box enclosure
  • dry filter assembly
  • large diameter 4 inch piping
  • High Quality Silicone Boot
  • Stainless Steel T-Bolt Clamps

Why Choose the WCF Intake Kit - Stage 2

Delivers a smoother, more responsive throttle for effortless acceleration.

Achieves a deeper, more aggressive engine growl under load.

Provides cooler, denser air for increased horsepower and torque.

Transforms engine bay aesthetics with a premium, race-inspired look.

Who Is This For?

Street Performance — 8/10
Large diameter pipe and performance claim suggest gains.

Engine Performance — 9/10
Designed for significant horsepower and torque gains.

Easy DIY Install — 7/10
Bolt-on install type implies straightforward installation.

Visual Aesthetic Upgrade — 6/10
Fabricated aluminum pipe and air box can enhance appearance.

Heavy Towing — 7/10
Increased engine performance can benefit towing capacity.

Drag Racing — 7/10
Horsepower and torque gains are beneficial for acceleration.

Vehicle Compatibility

YearMakeModelSubmodel
2020–2025ChevroletSilverado 2500 HDHigh Country
2020–2025ChevroletSilverado 2500 HDLT
2020–2025ChevroletSilverado 2500 HDLTZ
2020–2025ChevroletSilverado 2500 HDWT
2021–2025ChevroletSilverado 2500 HDCustom
2024–2025ChevroletSilverado 2500 HDZR2
2020–2025ChevroletSilverado 3500 HDHigh Country
2020–2025ChevroletSilverado 3500 HDLT
2020–2025ChevroletSilverado 3500 HDLTZ
2020–2025ChevroletSilverado 3500 HDWT
2020–2021GMCSierra 2500 HDBase
2020–2025GMCSierra 2500 HDAT4
2020–2025GMCSierra 2500 HDDenali
2020–2025GMCSierra 2500 HDSLE
2020–2025GMCSierra 2500 HDSLT
2022–2025GMCSierra 2500 HDPro
2024–2025GMCSierra 2500 HDDenali Ultimate
2024–2025GMCSierra 2500 HDAT4X
2020–2025GMCSierra 3500 HDSLT
2020–2021GMCSierra 3500 HDBase
2020–2025GMCSierra 3500 HDDenali
2020–2025GMCSierra 3500 HDAT4
2020–2025GMCSierra 3500 HDSLE
2022–2025GMCSierra 3500 HDPro
2024–2025GMCSierra 3500 HDDenali Ultimate

Additional Resources

Official Wehrli Product Page

Important Notices

⚠️ CARB Notice: This product is NOT legal for street use in California under CARB (California Air Resources Board) regulations. For off-road or race use only.

⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Browse More: Shop All Cold Air Intakes — Air Intake Systems

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Warranty Information

This Part Fits:

YearMakeModelSubmodel
2021-2025ChevroletSilverado 2500 HDCustom
2020-2025ChevroletSilverado 2500 HDHigh Country
2020-2025ChevroletSilverado 2500 HDLT
2020-2025ChevroletSilverado 2500 HDLTZ
2020-2025ChevroletSilverado 2500 HDWT
2024-2025ChevroletSilverado 2500 HDZR2
2020-2025ChevroletSilverado 3500 HDHigh Country
2020-2025ChevroletSilverado 3500 HDLT
2020-2025ChevroletSilverado 3500 HDLTZ
2020-2025ChevroletSilverado 3500 HDWT
2020-2025GMCSierra 2500 HDAT4
2024-2025GMCSierra 2500 HDAT4X
2020-2021GMCSierra 2500 HDBase
2020-2025GMCSierra 2500 HDDenali
2024-2025GMCSierra 2500 HDDenali Ultimate
2022-2025GMCSierra 2500 HDPro
2020-2025GMCSierra 2500 HDSLE
2020-2025GMCSierra 2500 HDSLT
2020-2025GMCSierra 3500 HDAT4
2020-2021GMCSierra 3500 HDBase
2020-2025GMCSierra 3500 HDDenali
2024-2025GMCSierra 3500 HDDenali Ultimate
2022-2025GMCSierra 3500 HDPro
2020-2025GMCSierra 3500 HDSLE
2020-2025GMCSierra 3500 HDSLT
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Additional Information

CARB:
This product is not CARB Legal and not for sale in California
Case Lot Quantity:
1
Category:
Air Intake Systems>Cold Air Intakes
Clearance Item:
N
MPN:
WCF100684-GW
Proposition 65:
Y
Install Type:
Bolt-On
Product Level:
Premium Performance
Street Performance:
8/10
Engine Performance:
9/10
Easy DIY Install:
7/10
Visual Aesthetic Upgrade:
6/10
Heavy Towing:
7/10
Drag Racing:
7/10
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