A-Premium Stretch-Fit Serpentine Belt 4-Rib 35.51 in — EPDM, Self-Tensioning AC Compressor Drive

The A-Premium Stretch Fit 4-rib serpentine belt is a 35.51-inch EPDM drive belt designed to replace the air conditioning compressor belt on specified GM and commercial vehicle models.

This belt is a stretch-fit style made from EPDM with polyester cords, built to self-tension after installation and resist heat and ozone for long service life. It matches OEM cross-reference numbers and fits a range of Cadillac, Chevrolet, GMC, Hummer, Isuzu, and other models when used in the air conditioning compressor position. Before ordering, confirm fitment with the vehicle’s year, engine, and the listed reference numbers to avoid returns.

Which vehicles and engines does this 35.51-inch belt fit?

The belt is intended for air conditioning compressor drive applications on many GM full-size trucks, SUVs and some commercial vehicles. It supports several V8 engine displacements across model years primarily from 2008 through 2019 depending on the platform.

• Cadillac Escalade/Escalade ESV 2009–2014 V8 6.2L; Escalade EXT 2009–2013 V8 6.2L
• Chevrolet Silverado 1500 (2009–2013 V8 4.8L/5.3L/6.2L), Silverado 2500 HD/3500 HD (2009–2019 V8 6.0L)
• Chevrolet Tahoe 2009 V8 4.8L/5.3L/6.2L, 2010–2014 V8 5.3L
• GMC Sierra, Yukon, Yukon XL, Savana, Hummer H2/H3, and Isuzu NPR models as listed

How is a stretch-fit belt different from a conventional belt?

Stretch-fit belts are manufactured slightly shorter than their operational circumference and rely on their elasticity plus the vehicle’s tensioning mechanism for a correct fit. They remove the need for manual routing around a tensioner pulley but require a proper installation tool and technique to avoid damage.

• Material: EPDM compound for improved heat and ozone resistance
• Design: 4 ribs (K profile) for multi-groove pulleys
• Installation: requires a tensioning tool to stretch and seat; self-tightens once installed
• Advantage: consistent tension without periodic manual adjustment

What are the exact specifications and OEM cross references?

This A-Premium belt measures 35.51 inches effective length with an outside circumference of 36 inches and a top width of 0.56 inches. It uses polyester cord reinforcement and is designated as a K-section, matching many OEM part numbers to simplify identification.

• Effective Length: 35.51 inches; Outside Circumference: 36 inches
• Rib Count: 4 (K cross section); Top Width: 0.56 inches
• Materials: EPDM elastomer with polyester cords
• Cross References: K040355SF, 12603509, 12624100, 19178068, 19210691, 19210961, 2249471, 8126241000, 8192106910, JX6E6C301BA, JX6Z8620E

What should I know before purchasing and installing?

Verify vehicle compatibility using the exact year, engine displacement, and the provided reference numbers; fuel type variations can change fitment. Because stretch-fit belts appear shorter before installation, use the correct stretching/tensioning tool and follow the vehicle service manual to avoid improper seating or damage.

• Check "Amazon Confirmed Fit" or equivalent fitment tools prior to purchase
• Do not buy if listed specs do not match your vehicle or compressor location
• Requires a dedicated installation tool and correct procedure for safe fitting
• A-Premium provides a one-year unlimited-mileage warranty for added confidence

Who is this for: technicians, DIY mechanics, and fleet managers who need a direct-fit, OEM-referenced 4-rib stretch serpentine belt for air conditioning compressor drives on specified GM trucks, SUVs, and compatible commercial vehicles. Choose this A-Premium belt when you want an EPDM stretch-fit replacement with clear cross references and a one-year guarantee — but always confirm exact fitment for your vehicle before ordering.