SunCoast Allison Shallow Filter Lock

The SunCoast A1-FLT-LOC Allison Shallow Filter Lock is designed to keep the factory Allison transmission filter securely in place under high-pressure and heavy-load conditions. On high-performance, towing, and competition trucks, the factory shallow filter can become dislodged, causing fluid starvation and potentially severe transmission damage. This filter lock provides a simple and effective solution to help protect your Allison transmission.

Designed for Duramax trucks equipped with the Allison 1000 transmission and a shallow transmission pan, the SunCoast Filter Lock is an inexpensive upgrade that adds extra insurance for demanding applications.

Features

• Prevents shallow Allison transmission filter from becoming dislodged
• Helps maintain proper fluid pickup under extreme conditions
• Reduces risk of cavitation and transmission failure
• Designed for Allison shallow pan filter setups
• Simple installation
• Ideal for towing, racing, sled pulling, and performance builds
• Durable construction for long-term reliability

Vehicle Fitment

• 2001-2019 Chevrolet Silverado 2500HD/3500HD
• 2001-2019 GMC Sierra 2500HD/3500HD
• 6.6L Duramax with Allison transmission
• For use with Allison shallow transmission pan/filter setups

Why Install a Filter Lock?

Under heavy throttle, towing loads, or elevated line pressure, the factory Allison filter can unseat from the pump inlet. If this occurs, the transmission may lose fluid pickup, resulting in slipping, overheating, or catastrophic transmission damage. The SunCoast Shallow Filter Lock helps eliminate this problem by positively retaining the filter.

Built for Demanding Duramax Applications

Whether your truck is used for daily driving, towing, racing, or sled pulling, protecting your Allison transmission is critical. SunCoast transmission components are trusted throughout the diesel industry for proven durability and performance.

Note: Designed specifically for Allison transmissions using a shallow transmission pan and shallow filter setup. Not compatible with deep pan filter configurations.

Part Number: A1-FLT-LOC

2019 Chevrolet Silverado 2500 HD
2019 Chevrolet Silverado 3500 HD
2019 GMC Sierra 2500 HD
2019 GMC Sierra 3500 HD
2018 Chevrolet Silverado 2500 HD
2018 Chevrolet Silverado 3500 HD
2018 GMC Sierra 2500 HD
2018 GMC Sierra 3500 HD
2017 Chevrolet Silverado 2500 HD
2017 Chevrolet Silverado 3500 HD
2017 GMC Sierra 2500 HD
2017 GMC Sierra 3500 HD
2016 Chevrolet Silverado 2500 HD
2016 Chevrolet Silverado 3500 HD
2016 GMC Sierra 2500 HD
2016 GMC Sierra 3500 HD
2015 Chevrolet Silverado 2500 HD
2015 Chevrolet Silverado 3500 HD
2015 GMC Sierra 2500 HD
2015 GMC Sierra 3500 HD
2014 Chevrolet Silverado 2500 HD
2014 Chevrolet Silverado 3500 HD
2014 GMC Sierra 2500 HD
2014 GMC Sierra 3500 HD
2013 Chevrolet Silverado 2500 HD
2013 Chevrolet Silverado 3500 HD
2013 GMC Sierra 2500 HD
2013 GMC Sierra 3500 HD
2012 Chevrolet Silverado 2500 HD
2012 Chevrolet Silverado 3500 HD
2012 GMC Sierra 2500 HD
2012 GMC Sierra 3500 HD
2011 Chevrolet Silverado 2500 HD
2011 Chevrolet Silverado 3500 HD
2011 GMC Sierra 2500 HD
2011 GMC Sierra 3500 HD
2010 Chevrolet Silverado 2500 HD
2010 Chevrolet Silverado 3500 HD
2010 GMC Sierra 2500 HD
2010 GMC Sierra 3500 HD
2009 Chevrolet C4500 Kodiak
2009 Chevrolet C5500 Kodiak
2009 Chevrolet Silverado 2500 HD
2009 Chevrolet Silverado 3500 HD
2009 GMC C4500 Topkick
2009 GMC C5500 Topkick
2009 GMC Sierra 2500 HD
2009 GMC Sierra 3500 HD
2008 Chevrolet C4500 Kodiak
2008 Chevrolet C5500 Kodiak
2008 Chevrolet Silverado 2500 HD
2008 Chevrolet Silverado 3500 HD
2008 GMC C4500 Topkick
2008 GMC C5500 Topkick
2008 GMC Sierra 2500 HD
2008 GMC Sierra 3500 HD
2007 Chevrolet C4500 Kodiak
2007 Chevrolet C5500 Kodiak
2007 Chevrolet Silverado 2500 HD
2007 Chevrolet Silverado 2500 HD Classic
2007 Chevrolet Silverado 3500 Classic
2007 Chevrolet Silverado 3500 HD
2007 GMC C4500 Topkick
2007 GMC C5500 Topkick
2007 GMC Sierra 2500 HD
2007 GMC Sierra 2500 HD Classic
2007 GMC Sierra 3500 Classic
2007 GMC Sierra 3500 HD
2006 Chevrolet C4500 Kodiak
2006 Chevrolet C5500 Kodiak
2006 Chevrolet Silverado 2500 HD
2006 Chevrolet Silverado 3500
2006 GMC C4500 Topkick
2006 GMC C5500 Topkick
2006 GMC Sierra 2500 HD
2006 GMC Sierra 3500
2005 Chevrolet C4500 Kodiak
2005 Chevrolet C5500 Kodiak
2005 Chevrolet Silverado 2500 HD
2005 Chevrolet Silverado 3500
2005 GMC C4500 Topkick
2005 GMC C5500 Topkick
2005 GMC Sierra 2500 HD
2005 GMC Sierra 3500
2004 Chevrolet C4500 Kodiak
2004 Chevrolet C5500 Kodiak
2004 Chevrolet C6500 Kodiak
2004 Chevrolet C7500 Kodiak
2004 Chevrolet Silverado 2500 HD
2004 Chevrolet Silverado 3500
2004 Chevrolet T6500
2004 Chevrolet T7500
2004 GMC C4500 Topkick
2004 GMC C5500 Topkick
2004 GMC C6500 Topkick
2004 GMC C7500 Topkick
2004 GMC Sierra 2500 HD
2004 GMC Sierra 3500
2004 GMC T6500
2004 GMC T7500

SKU: A1-FLT-LOC-S

GTIN:

Manufacture Name: Suncoast

Shipping Weight: 1

Shipping Length: 5

Shipping Width: 8

Shipping Height: 3.25

EO Number:

Cross Reference #

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