SKP SP1021 Spark Plug

Iridium Spark Plug for OE-Style Ignition Performance

SKP SP1021 is a spark plug built for secondary ignition service across a wide range of GM, Chrysler, Dodge, Jeep, and related applications. It combines an iridium tip with a copper core to support consistent spark delivery and dependable combustion in vehicles such as the Chevrolet Traverse, Buick Enclave, and Cadillac CTS.

Key Features

• Iridium tip material for precise spark focus
• Copper center electrode core for stable conductivity
• OE-style replacement for many late-model and earlier applications
• Direct fit coverage for a broad range of GM, Chrysler, Dodge, Jeep, and Saab vehicles
• Part number SP1021 for catalog lookup and cross-reference matching

Detailed Description

SKP SP1021 is an ignition spark plug engineered for vehicles that call for an iridium-tipped plug with a copper core center electrode. The design supports reliable ignition performance in fitments including the 2009-2018 Chevrolet Traverse, 2008-2017 Buick Enclave, and 2013-2019 Cadillac XTS, along with many other applications listed in the fitment data. This part number, SP1021, also cross-references Autolite XP5263 for the same application.

Compatible With applications across Cadillac, Chevrolet, Buick, GMC, Dodge, Chrysler, Jeep, Pontiac, Saturn, Saab, Suzuki, Hummer, Isuzu, and Oldsmobile models, this spark plug is a practical replacement when servicing misfire-related ignition wear or restoring proper combustion quality. It is listed with multiple gap specifications by vehicle application, so the installed gap should match the vehicle-specific note.

What It Is Used For

• Replacing worn spark plugs that contribute to rough idle
• Addressing hard-start or extended-crank ignition complaints
• Restoring combustion consistency after plug wear or fouling
• Correcting misfire conditions tied to degraded secondary ignition components
• Maintaining proper ignition performance in OE-specified applications

Installation Notes and Tips

Verify the exact year, make, model, and engine application before installation. Match the gap specification shown in the fitment notes for the vehicle, since listed applications vary between .035, .040, .043, .044, .045, .049, .050, and .060 inch settings. Use the vehicle service information for torque and service procedures, and inspect ignition coils and boots during spark plug replacement.

Quality Assurance

SKP SP1021 is built to meet the fitment and material requirements shown in the product data, with an iridium tip and copper core construction for service across 539 confirmed vehicle applications. It is a direct replacement option for many Chevrolet Traverse, Buick Enclave, and Cadillac CTS ignition service jobs.