A-Premium Serpentine Belt 6-Rib 39.48 in — EPDM K‑Section, OEM Fit for Audi/BMW/VW

The A-Premium Serpentine Belt 6-Rib 39.48 In is a direct-fit, EPDM multi-rib drive belt engineered to replace OEM part numbers like 04E145933A and deliver quiet, durable accessory drive performance.

This replacement serpentine belt fits a range of Audi, BMW and Volkswagen gasoline models with 4-cylinder engines and a 6-rib drive layout. Built from EPDM rubber with polyester cords and a precision K cross-section, it matches the effective length and rib count required for specific engine accessory arrangements. Before installing, always confirm fitment using your vehicle year, make and model to ensure proper tensioner compatibility.

Which vehicles and engines is this belt compatible with?

This belt is manufactured to suit multiple European and VW platforms that use a 6-rib serpentine configuration. Fitment covers selected Audi A3, numerous BMW 2/3/4/5 Series and X models, plus VW Golf and Jetta families across specified model years.

• Audi A3 Sportback e-tron 2016–2018 L4 1.4L
• BMW 320i, 328i, 428i, 528i, X1/X3/X4/Z4 models (various 2012–2018 L4 2.0L applications)
• Volkswagen Golf (2019–2021), Golf SportWagen (2019), Jetta (2016–2021) and Jetta Taos (2022–2023) with 1.4L–1.5L engines
• Always use the vehicle selector to confirm exact fitment before ordering

What are the belt’s dimensions and construction details?

The A-Premium belt is built to precise OEM-replacement dimensions and durable materials so it maintains tension and resists wear. Key measurements and materials are listed for installers and mechanics verifying part interchange.

• Effective length: 39.48 inches; outside circumference: 40.06 inches
• Rib count: 6; top width: 0.807 in; cross-section: K (6PK1000 designation)
• Material: EPDM rubber compound with polyester cord reinforcement for flexibility and strength

How does this belt handle heat, oil and long service intervals?

EPDM rubber and reinforced cord construction give the belt improved resistance to typical engine stresses such as high temperatures, oils and road contaminants. The design also focuses on minimizing vibration and operational noise while preserving alignment across pulleys.

• EPDM composition improves crack and ozone resistance compared to older rubbers
• Polyester cord helps maintain proper tension and reduces stretch over time
• Precision geometry lowers belt flutter and accessory noise under load

What should I check before installing this replacement belt?

Proper installation extends service life — inspect ancillary components and use correct tension settings. A worn tensioner, damaged idler, or misaligned pulley will shorten belt life regardless of belt quality.

• Inspect and, if needed, replace the tensioner and idler pulleys before fitting the new belt
• Verify pulleys are free of oil and debris to prevent premature wear
• Confirm belt routing and torque specifications from the vehicle service manual

Who is this for: Technicians, DIYers and fleet owners replacing a failing or worn 6-rib serpentine belt on supported Audi, BMW or Volkswagen 4-cylinder models. Choose this A-Premium belt when you need an aftermarket part that matches OEM dimensions, resists heat and contaminants, and comes backed by a one-year unlimited-mileage guarantee. Always confirm vehicle compatibility using year, make and model details before purchase and check accessory drive components during installation for best long-term results.