Fire each cylinder with the DENSO Auto Parts spark plug 5029, a standard OE-grade plug built around DENSO's patented U-Groove ground electrode. It fits many vehicles, among them the 1972-1975 Chevrolet Impala 4.1L / 5.7L / 6.6L / 7.4L, 1972-1975 Chevrolet Camaro 4.1L / 5.0L / 5.7L / 6.6L and 1975-1991 Chevrolet P30 4.8L / 5.7L / 7.4L, and it is a direct-fit replacement for the listed applications.
- Patented U-Groove ground electrode: The groove is designed to allow a larger flame front for improved ignitability.
- Copper core center electrode: Chosen for its thermal conductivity. The center electrode has a nickel tip, and the ground electrode has a nickel core.
- OE-grade: DENSO rates this standard plug as OE-grade.
- Pre-gapped: Set at 0.9 mm, with a single ground electrode in a standard configuration.
Specifications: 14.0 mm thread diameter, 11.6 mm reach, tapered seat, 16 mm hex, 5,000-ohm resistance and a manufacturer heat range of 16. Country of origin: Japan.
Listed applications cover the L6-3.8L, L6-4.1L, L6-4.8L, V6-4.3L, V8-5.0L, V8-5.7L, V8-6.6L and V8-7.4L engines. The number of plugs varies by engine: the listed six-cylinder engines use six and the V8 engines use eight. The minimum order quantity is four. See the "Vehicles it fits" section for the full list of vehicles and engines.
This part cross-references / interchanges with the following part numbers:
T16R-U, 19300383, 5613842, 5613867
Frequently Asked Questions
Will this work as a Chevy Impala spark plug for a 1972-1975 Chevrolet Impala 4.1L / 5.7L / 6.6L / 7.4L?
Yes, it is listed for the 1972-1975 Chevrolet Impala 4.1L / 5.7L / 6.6L / 7.4L. Check the "Vehicles it fits" section to confirm your exact year and engine.
Is this a Camaro spark plug option for the 1972-1975 Chevrolet Camaro 4.1L / 5.0L / 5.7L / 6.6L?
Yes, it is listed for the 1972-1975 Chevrolet Camaro 4.1L / 5.0L / 5.7L / 6.6L and the 1975-1991 Chevrolet P30 4.8L / 5.7L / 7.4L, among many other vehicles shown in the "Vehicles it fits" section.
What are the key specs of the DENSO 5029?
It has a 14.0 mm thread diameter, 11.6 mm reach, tapered seat, 16 mm hex, 0.9 mm pre-gap, 5,000-ohm resistance and a DENSO heat range of 16.
How many spark plugs do I need?
It depends on the engine. The listed six-cylinder engines use six plugs and the V8 engines use eight. The minimum order quantity is four.
What are signs a spark plug may need replacing?
Misfires, hard starting, rough idle or hesitation can be signs of worn plugs, but they can have other causes too. Diagnose the cause first, then check the plugs for electrode wear or fouling.
