BDFHYK UF271 ignition coil packs are OE-style aftermarket replacement parts for listed GM square-type coil service groups using a matching UF271-style coil design. Similar GM V8 applications may use different coil body shapes, so confirm the original square-type coil, engine, connector shape, mounting points, and OE reference before ordering.
| Make | Models | Fitment Notes |
|---|---|---|
| Chevrolet | Silverado, Tahoe, Avalanche, SSR, C4500/C5500/C6500/C7500 Kodiak | Listed 4.8L / 5.3L / 6.0L / 6.6L / 8.1L GM service groups; confirm square-type coil design. |
| GMC | Yukon, Savana, Envoy XL/XUV, C4500/C5500/C6500/C7500/C8500 TopKick | Compare original coil body and OE reference. |
| Cadillac / Hummer / Isuzu | Escalade ESV/EXT, H2, NPR, NPR-HD | Confirm exact year, engine, connector, and square coil style. |
| Workhorse | R26, W-Series, FasTrack and related listed service groups | Confirm original coil and service application before installation. |
A weak ignition coil may contribute to hard starting, rough idle, hesitation, weak acceleration, reduced fuel economy, misfire symptoms, or a check engine light. Similar symptoms can also come from worn spark plugs, wiring problems, fuel delivery faults, intake leaks, sensors, or engine mechanical condition.
Install on a cool engine. Inspect the spark plugs, coil boots, wiring connectors, and mounting area before installation. BDFHYK ignition coils are OE-style aftermarket replacement parts, not factory-branded GM, Chevrolet, GMC, Cadillac, Hummer, Isuzu, or Workhorse parts.
BDFHYK 8PCS Ignition Coil Pack UF271 for 1999-2009 Chevy Silverado Tahoe 5.3L V8
