Roadmax 3K243AP Serpentine Belt - Water Pump

Overview

Roadmax 3K243AP is a standard automotive V-ribbed serpentine belt built for buyers who want a quality replacement without stepping up to a premium belt. It uses EPDM construction and polyester cord for dependable accessory drive service.

Compatible With Buick Lucerne, Cadillac DTS, Cadillac DeVille, Cadillac Seville, Cadillac Eldorado, Oldsmobile Aurora, and Pontiac Bonneville applications that use a water pump drive belt. The 3K243AP part number is also useful when cross-referencing common replacement listings.

Key Features

• EPDM belt material for durable everyday service.
• Polyester cord reinforcement for stable belt construction.
• 3-rib K-section design for accessory drive applications.
• 24.33-inch effective length and 24.875-inch outside circumference.
• Standard automotive V-ribbed belt construction.

Product Details

This Roadmax serpentine belt is engineered as a standard replacement for accessory drive systems that require a 3-rib, K-section belt. The 11 mm top width and EPDM compound support consistent operation in routine service conditions, while the polyester cord helps maintain belt shape under load. If you are replacing a worn belt on a Buick Lucerne, Cadillac DTS, or Cadillac DeVille, the 3K243AP offers a direct match to the listed fitment and dimensions.

This part cross-references Gates K030243 and Dayco 5030243 for the same application. The 3K243AP part number appears in replacement catalogs for multiple GM platforms, including Cadillac, Buick, Oldsmobile, and Pontiac models.

Common Replacement Issues

• Squealing or chirping from a worn accessory drive belt.
• Cracking, glazing, or visible wear on the belt surface.
• Loss of proper belt tension or tracking.
• Accessory drive noise related to belt deterioration.

Installation Notes

Verify belt routing, rib count, and effective length before installation. Confirm the application uses a water pump position and compare the existing belt dimensions to the listed specifications. Match the 3K243AP part number to the vehicle’s accessory drive layout before final installation.

Quality Assurance

Roadmax positions this standard belt as a quality option for budget-conscious buyers who do not require premium-belt performance. The EPDM material and polyester cord construction support consistent replacement use in the listed applications.