Autolite AI5263 spark plug for the 2005-2008 Jeep Grand Cherokee V8 5.7L, the 2006-2010 Grand Cherokee V8 6.1L and other vehicles ignites the fuel mixture in the cylinder to start combustion. This Autolite spark plug is a resistor type with a 4000 ohm rating.
- Iridium Ultra line with a double precious metal design for added durability
- Laser-welded, iridium-enhanced fine-wire center electrode for focused ignition
- Platinum ground electrode for resistance to wear
- Tapered ground wire that enhances ignitability
- High alumina ceramic multi-rib insulator that prevents flash-over
- Copper core inside the plug for higher thermal conductivity
Quick facts
- Part: Autolite AI5263 spark plug
- Fits: the 2005-2008 Jeep Grand Cherokee V8 5.7L, the 2006-2010 Grand Cherokee V8 6.1L and other vehicles
- Condition: New
Hard starting, a rough idle or a misfire can mean the plugs are worn. Before you replace them, rule out the ignition coils, wiring and fuel delivery as the source of the problem, since a fault there can feel just like a tired plug.
Fits
The 2005-2008 Jeep Grand Cherokee V8 5.7L and the 2006-2010 Grand Cherokee V8 6.1L take this plug, and it fits many other vehicles too. As a Chevy Equinox spark plug, it fits the 2008-2009 Equinox V6 3.6L and the 2010-2017 Equinox 4-cylinder 2.4L. The 2003-2006 Jeep Wrangler 4-cylinder 2.4L takes it as well. Open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Thread size: M14 - 1.25, 14 mm diameter, metric
- Hex size: 5/8 in
- Seat type: Tapered
- Pre-gap: 0.04 in (1 mm)
- Heat range: 11
- Center electrode projection: Mid projection
- Quantity per vehicle: varies by engine
Build and materials
- Center electrode: fine wire, iridium tip, copper core
- Ground electrode: taper cut platinum tip, nickel core, one electrode
- Insulator material: Ceramic
- Resistor type, 4000 ohm
- Condition: New
- Warranty: Autolite lifetime limited warranty
- Country of origin: Mexico
In the box
This listing is one spark plug; no washer is included. The quantity a vehicle takes varies by engine, and the 2003-2006 Jeep Wrangler 4-cylinder 2.4L takes four.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Are Autolite AI5263 Jeep Wrangler spark plugs right for a 2003-2006 Wrangler 4-cylinder 2.4L?
Yes. The Autolite AI5263 fits the 2003-2006 Jeep Wrangler 4-cylinder 2.4L, which takes four plugs.
How many Jeep Grand Cherokee spark plugs does a 2005-2008 Grand Cherokee V8 5.7L need?
The 2005-2008 Jeep Grand Cherokee V8 5.7L takes 16 plugs, and so does the 2006-2010 Grand Cherokee V8 6.1L. This listing is a single Autolite AI5263.
What thread size and gap does the Autolite AI5263 have?
The thread size is M14 - 1.25 with a 5/8 in hex and a tapered seat. The pre-gap is 0.04 in (1 mm).
Is the AI5263 the same as an Autolite double platinum spark plug?
No. The AI5263 is an iridium and platinum plug: the center electrode has an iridium tip on a copper core, and the ground electrode has a platinum tip on a nickel core.
What warranty comes with the Autolite AI5263 spark plug?
Autolite covers the AI5263 with a lifetime limited warranty that guarantees performance equal to OE designed plugs.
