A-Premium Engine Ignition Coil 12568062 direct-fit replacement for GM/Isuzu 2.8L–4.2L — OE-fit, one-year warranty

The A-Premium Engine Ignition Coil 12568062 is a direct-fit replacement ignition coil engineered to restore reliable spark delivery for compatible GM, Isuzu, Saab, Buick and Hummer engines.

This ignition coil is built to match OE fitment and electrical characteristics for a range of 2.8L–4.2L L4/L5/L6 engines. It replaces multiple original part numbers and provides a straightforward swap-in for models where ignition coil failure causes misfires, rough idle, poor fuel economy, or a check engine light. A-Premium backs the part with a one-year unlimited-mileage guarantee, giving technicians and DIYers confidence during installation and use.

Which vehicles will this A-Premium ignition coil fit?

The 12568062 coil is compatible with many GM-family and related vehicles across model years listed by engine type. Fitment covers Chevrolet Colorado and GMC Canyon four-cylinder options, several six-cylinder SUVs including TrailBlazer, Envoy, and Saab 9-7x, plus select Isuzu, Buick, Hummer, and Oldsmobile models. Always verify your vehicle's engine code and OEM reference numbers before purchasing.

• Chevrolet Colorado 2004–2006: L4 2.8L / L5 3.5L
• GMC Canyon 2004–2006: L4 2.8L / L5 3.5L
• Trailblazer/Trailblazer EXT 2002–2005: L6 4.2L
• Envoy, Envoy XL, Envoy XUV 2002–2005: L6 4.2L
• Isuzu Ascender, i-280, i-290, i-350, i-370: multiple 2.8L–3.7L engines
• Buick Rainier, Hummer H3, Oldsmobile Bravada, Saab 9-7x: specified years and 4.2L V6 variants

How does this coil match original equipment specifications?

A-Premium designs this coil to align with OEM dimensions, connector types and electrical output so it installs without modifications and works with factory wiring harnesses. That alignment helps ensure stable spark timing and consistent combustion for engines originally equipped with the referenced coil design. The part cross-references many OEM numbers to simplify confirmation.

• Direct-fit housing and terminal layout for OEM connector mating
• Electrical characteristics tuned to factory ignition module expectations
• Cross-references include 12568062, 12570616, UF-303, C642 and other OEM codes
• Sold with a one-year unlimited-mileage guarantee for added assurance

What symptoms indicate you need this ignition coil?

Common signs of a failing ignition coil include engine misfires, a rough or unstable idle, dim acceleration, and an illuminated check engine light with misfire codes. Replacing the faulty coil with a direct-fit unit like this one is a typical repair to restore normal engine performance and emissions. Diagnosing via OBD-II trouble codes and spark testing confirms the coil as the source of the issue.

• OBD-II codes P0300–P0306 indicating random or cylinder-specific misfires
• Intermittent power loss or hesitation under load
• Rough idle or engine stalling at low speeds
• Visible damage, corrosion or arcing on original coil terminals

How do I install the A-Premium ignition coil and what should I check?

Installation is straightforward: disconnect the negative battery terminal, remove the engine cover if necessary, unplug the harness and unbolt the old coil, then install the replacement and reattach connections. Torque fasteners to manufacturer specs and clear any stored engine codes after installation. It’s a job many owners can handle with basic hand tools, but consult a service manual if unsure.

• Disconnect battery negative before starting work
• Confirm connector pin alignment and secure clips
• Use factory torque values for coil mounting bolts
• Clear error codes and verify normal idle after replacement

Who is this for: Automotive technicians and owners of compatible GM-family, Isuzu, Saab, Buick, and Hummer vehicles seeking a reliable, direct-fit ignition coil replacement. It’s appropriate for repair shops replacing failed coils during routine diagnostics and for DIY mechanics comfortable with basic engine electrical work who want a cost-effective, warranty-backed alternative to OE parts.