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Main image of Alpine S-W10D4 Type S Single 10" Sub Box Fits GMC Sierra Ext Cab 1999-2006 | Custom truck subwoofer enclosure package, loaded 10 inch woofer, deep bass upgrade, easy install, space-saving design

Alt view image 2 of 7 - Alpine S-W10D4 Type S Single 10" Sub Box Fits GMC Sierra Ext Cab 1999-2006 | Custom truck subwoofer enclosure package, loaded 10 inch woofer, deep bass upgrade, easy install, space-saving design

Alt view image 3 of 7 - Alpine S-W10D4 Type S Single 10" Sub Box Fits GMC Sierra Ext Cab 1999-2006 | Custom truck subwoofer enclosure package, loaded 10 inch woofer, deep bass upgrade, easy install, space-saving design

Alt view image 4 of 7 - Alpine S-W10D4 Type S Single 10" Sub Box Fits GMC Sierra Ext Cab 1999-2006 | Custom truck subwoofer enclosure package, loaded 10 inch woofer, deep bass upgrade, easy install, space-saving design

Alt view image 5 of 7 - Alpine S-W10D4 Type S Single 10" Sub Box Fits GMC Sierra Ext Cab 1999-2006 | Custom truck subwoofer enclosure package, loaded 10 inch woofer, deep bass upgrade, easy install, space-saving design

Alt view image 6 of 7 - Alpine S-W10D4 Type S Single 10" Sub Box Fits GMC Sierra Ext Cab 1999-2006 | Custom truck subwoofer enclosure package, loaded 10 inch woofer, deep bass upgrade, easy install, space-saving design

Alt view image 7 of 7 - Alpine S-W10D4 Type S Single 10" Sub Box Fits GMC Sierra Ext Cab 1999-2006 | Custom truck subwoofer enclosure package, loaded 10 inch woofer, deep bass upgrade, easy install, space-saving design

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Alpine S-W10D4 Type S Single 10" Sub Box Fits GMC Sierra Ext Cab 1999-2006 | Custom truck subwoofer enclosure package, loaded 10 inch woofer, deep bass upgrade, easy install, space-saving design

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1999-2006 GMC Sierra Ext Cab Truck Alpine Type S S-W10D4 Single 10" Sub Box Enclosure - Final 2 Ohm This custom-fit sub box enclosure is designed for the 1999-2006 GMC Sierra Extended Cab Truck, accommodating a single Alpine Type S S-W10D4 10" subwoofer. The enclosure is pre-wired to a final 2 Ohm load, ensuring optimal performance from your Alpine sub. Constructed with durable materials, this box provides a solid, rattle-free mounting solution that enhances bass response. Its precise fit for the Sierra Ext Cab maximizes available space while delivering clean, impactful sound. Ideal for upgrading your truck's audio system with a reliable, purpose-built enclosure

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1999-2006 GMC Sierra Ext Cab Truck Alpine Type S S-W10D4 Single 10" Sub Box Enclosure - Final 2 Ohm This custom-fit sub box enclosure is designed for the 1999-2006 GMC Sierra Extended Cab Truck, accommodating a single Alpine Type S S-W10D4 10" subwoofer. The enclosure is pre-wired to a final 2 Ohm load, ensuring optimal performance from your Alpine sub. Constructed with durable materials, this box provides a solid, rattle-free mounting solution that enhances bass response. Its precise fit for the Sierra Ext Cab maximizes available space while delivering clean, impactful sound.

Ideal for upgrading your truck's audio system with a reliable, purpose-built enclosure

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First Listed on Newegg	August 17, 2026

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