The DENSO W24ESR-U spark plug, manufacturer part number 4033, is designed for dependable ignition performance in compatible automotive applications. As an original equipment spark plug from DENSO, it supports consistent engine operation and reliable starting when matched to the vehicle’s specified fitment. The W24ESR-U model is engineered for applications requiring its specific plug design and heat range.
Built with a copper core center electrode, this spark plug promotes superior thermal conductivity to help manage operating temperatures and support efficient spark performance. The insulator uses a unique five-rib design that helps reduce flashover and minimize voltage loss, contributing to dependable ignition under demanding conditions. A dual copper and glass seal bonds the center electrode and insulator together, creating a gas-tight seal for added durability and dependable operation.
For proper installation, verify that the DENSO W24ESR-U model and manufacturer part number 4033 match the vehicle, engine, and application requirements. This spark plug is intended as an original equipment replacement for compatible automotive systems and should be installed according to the vehicle manufacturer’s service procedures.
Features:
- Model: W24ESR-U
- Brand: DENSO
- Manufacturer part number: 4033
- Vendor part number: 4033
- Application: Original equipment replacement for compatible automotive applications
- Electrode: Copper core center electrode for superior thermal conductivity
- Insulator: Five-rib design helps reduce flashover and voltage loss
- Seal: Dual copper and glass seal provides a gas-tight bond between the center electrode and insulator
- Construction: 100 percent pre-fired for reliable operation