NPAUTO Round Ignition Coil Pack Set for GM V8 4.8/5.3/6.0 – 8-Pack OEM Fit, D585/UF262 Cross-Reference

NPAUTO's round ignition coil pack set of 8 replaces factory coils on many V8 4.8L, 5.3L and 6.0L GM engines from 1999–2007 (D585 / UF262), restoring reliable spark delivery for cylinders across the bank. If your GM V8 is running rough, misfiring, or losing power, worn or failed coils are a common cause. This aftermarket set from NPAUTO fits a wide range of Chevy, GMC, Cadillac, Hummer and Isuzu V8 applications — models include Silverado, Sierra, Tahoe, Suburban, Avalanche, Yukon XL, Escalade ESV/EXT, H2, Express vans, SSR and certain Isuzu SUVs and trucks. The kit corresponds to interchange numbers like D585, UF262, 19005218 and 10457730, giving technicians and DIYers clear cross-reference options.

Which vehicles will these ignition coils fit?

These coils are designed for V8 engines with round-top coil packs built into GM 4.8L, 5.3L and 6.0L platforms. They specifically cover many model years from 1999 through 2007 across Chevy, GMC, Cadillac, Hummer and Isuzu lineups, matching factory-style electrical and mounting points for a straightforward swap.

• Chevy: Silverado 1500/2500/3500, Tahoe, Suburban, Avalanche, SSR, Express vans (1999–2006)
• GMC: Sierra, Yukon XL, Savana, Sierra HD models (2001–2007)
• Other: Cadillac Escalade ESV/EXT, Hummer H2, Isuzu Ascender and certain Isuzu pickup/SUV models (2002–2007)
• Interchange: D585, UF262, 19005218, 10457730 and similar factory part numbers

How do these coils improve engine performance?

Replacing worn or damaged coils can restore consistent spark timing and intensity, which helps the engine run smoother and more efficiently. While these are aftermarket units, they’re built to replicate OEM fitment and electrical characteristics, helping resolve symptoms related to ignition failure.

• Reduces engine misfires and rough idle by restoring proper spark delivery
• Helps regain throttle response and engine power lost to weak coils
• Improves fuel burn consistency, potentially stabilizing fuel economy
• Plug-and-play design minimizes installation time and wiring changes

What should I check before replacing coil packs?

Confirm engine family, cylinder head layout and connector type to ensure compatibility — many GM V8s share similar coils but years and trims vary. Inspect spark plugs, wiring harnesses and mounting points; replacing coils works best alongside good plugs and intact harnesses to prevent repeated failures.

• Verify engine size (4.8L, 5.3L, 6.0L) and model year alignment
• Compare OEM part numbers (D585, UF262, 19005218, 10457730) for cross-reference
• Check spark plug condition and gap, and inspect wiring/connectors for damage
• Replace coils in matched sets when multiple units show wear to ensure balanced performance

How easy is installation and what tools are required?

Installation is typically straightforward for anyone comfortable with basic engine work: remove the engine cover (if present), unplug connectors, unbolt the coils, swap in the new units and reconnect. No special programming or ignition module reconfiguration is required for direct-fit replacements; common hand tools and a torque wrench are usually sufficient.

• Basic tools: ratchet, metric sockets, torque wrench, dielectric grease
• No ECU coding required for a direct-fit replacement
• Recommended to replace spark plugs or at least inspect during swap
• Follow torque specs for coil mounting to avoid damage and ensure sealing

Who is this for This NPAUTO set of 8 ignition coils is aimed at owners, fleet managers and independent mechanics working on GM V8 trucks and SUVs who need an affordable, OEM-style replacement. It’s ideal when diagnosing misfires, restoring driveability after coil failure, or performing preventative service on older GM engines that use round-top coil packs. Cross-referenced part numbers (D585, UF262, 19005218, 10457730) make it a practical choice for sourcing correct-fit components without excessive downtime.

FAQ

Q: Do these coils fit a 2004 Chevy Silverado 5.3L?

A: Yes. This NPAUTO set fits many 2003–2006 Chevy Silverado 5.3L V8s that use the round-top coil packs; verify OEM cross-reference numbers to be certain.

Q: Are these plug-and-play replacements or do they need programming?

A: They are direct-fit plug-and-play coils; no ECU programming is required for standard installations.