Help keep every cylinder firing with the Autolite spark plug AP606, a platinum plug whose platinum center electrode firing tip is designed for improved performance and increased durability. It fits many vehicles, among them the 2010-2013 Chevrolet Silverado 1500 with the V6-4.3L, the 2010-2013 GMC Sierra 1500 with the V6-4.3L and the 2005-2009 Chevrolet Equinox with the V6-3.4L. See the "Vehicles it fits" section for the full list.
The platinum design is intended to fire quickly, which helps support smooth starts, acceleration and fuel efficiency. Worn plugs can cause misfires, rough idle or hard starting. Because other faults can cause these too, diagnose the cause before replacing the plugs.
- Platinum firing tip: designed to prevent gap erosion for a longer service life.
- High alumina ceramic insulator: provides thermal conductivity and insulation for increased strength.
- Multi-rib insulator: helps prevent flash-over.
- Nickel-plated shell: resists corrosion for increased durability.
Specifications: M14 x 1.25 metric thread, 0.679 in (17 mm) reach, tapered seat, 5/8 in hex, heat range 7, 0.06 in (1.5 mm) pre-gap, and mid projection. It is a resistor plug with 4000 ohms of resistance. It has a copper-core center electrode with a platinum tip, a single nickel ground electrode and a non-removable terminal nut. No washer is included.
The number of plugs needed varies by engine. For example, the listed V6 applications use six. Autolite backs this plug with a 4-year limited warranty. Country of origin: Mexico.
Interchange: HR8DPP30Y · HR9DPP30Y · W10F · 5273 · TR5VX · PP160F
This part cross-references / interchanges with the following part numbers:
HR8DPP30Y, HR9DPP30Y, W10F, 5273, TR5VX, PP160F
Frequently Asked Questions
Is the AP606 the right 2005-2009 Chevy Equinox 3.4L spark plug?
It is listed for the 2005-2009 Chevrolet Equinox with the V6-3.4L engine, which uses six plugs. Check the "Vehicles it fits" section to confirm your vehicle.
Is the AP606 the right 2010-2013 Chevy Silverado 1500 4.3L spark plug?
Yes. It is listed for the 2010-2013 Chevrolet Silverado 1500 and the 2010-2013 GMC Sierra 1500 with the V6-4.3L engine. Each uses six plugs.
What are the key specs of the Autolite AP606?
It has an M14 x 1.25 thread, 0.679 in (17 mm) reach, tapered seat, 5/8 in hex, heat range 7, 0.06 in (1.5 mm) pre-gap and a 4000-ohm resistor, with a platinum center electrode tip.
Does it come with a washer, and is it pre-gapped?
No washer is included; the plug uses a tapered seat. It is pre-gapped to 0.06 in (1.5 mm). Check the gap against your vehicle's service specification before installing it.
What are signs spark plugs may need replacing?
Common signs are misfires, rough idle, hard starting, hesitation when accelerating or reduced fuel economy. Other faults can cause these too, so diagnose the cause before replacing the plugs.
