MAS Ignition Coils UF303 Set of 4 — Direct-Fit Replacement for 2.8L L4 (2004–2006 Chevy Colorado, GMC Canyon) — OE-Style Performan

MAS Ignition Coils UF303 is a set of four direct-replacement coils engineered to restore spark delivery for 2.8L L4 engines used in 2004–2006 Chevy Colorado, 2004–2006 GMC Canyon and 2006 Isuzu i-280 vehicles.

If your engine is misfiring, running rough, or the check engine light flags an ignition-related code, the correct replacement coil can get your truck back to smooth operation. These MAS coils are designed to match OE electrical and mechanical interfaces and come packaged as a full set of four to replace all cylinders at once, reducing diagnostic guesswork and providing even performance across the engine.

How do these MAS UF303 coils fit my 2004–2006 Chevy or GMC truck?

These ignition coils are made to match the fitment points and electrical connectors of the original assemblies used on the 2.8L L4 engines in the specified model years. They accept the same mounting bolts and plug connections so installation is straightforward for a seasoned DIYer or technician.

• Direct fit for Chevy Colorado 2004–2006 with 2.8L L4 engines
• Direct fit for GMC Canyon 2004–2006 with 2.8L L4 engines
• Compatible with 2006 Isuzu i-280 2.8L L4
• Replaces OE part numbers such as UF-303, IC414 and several cross-references

What performance and quality features can I expect from this four-pack?

The MAS coils are built with materials and winding specifications intended to meet the ignition requirements of the 2.8L engine while resisting heat and vibration common in engine bays. Buying a set of four ensures uniform spark strength across cylinders, which helps restore smooth idle and consistent throttle response.

• Set includes four identical ignition coils for full-bank replacement
• Designed to withstand typical under-hood temperatures and vibration
• Manufactured to match electrical output and resistance ranges of OE units
• Packaged with part-number cross-references for easy verification

How difficult is installation and what should I prepare?

Installation is moderately easy with basic hand tools and minimal mechanical experience; it typically involves disconnecting the battery, removing the engine cover (if present), unplugging the old coils, unbolting them, and reversing the process with the new MAS units. Take care to follow torque specs and connector seating to avoid future issues.

• Recommended tools: ratchet, extension, appropriate sockets, and dielectric grease
• Typical install time: 30–60 minutes for a competent DIYer
• Replace all four coils to maintain consistent performance
• Clear any diagnostic trouble codes after installation and test-drive

What warranty and part compatibility details should I know?

This MAS coil set carries a 1-year limited warranty that covers manufacturing defects under normal use. The product listing includes many OE and aftermarket cross-reference numbers to help ensure you select the correct coil for your vehicle.

• 1-year limited warranty included with the set of four coils
• Cross-references include UF-303, IC414 and numerous alternate numbers for verification
• Sold as a complete set to encourage matched replacements across the engine

Who is this for: Vehicle owners, mechanics, and fleet managers who need a reliable, full-bank replacement for worn or failing ignition coils on 2.8L L4 Chevy Colorado, GMC Canyon and 2006 Isuzu i-280 models. It’s a practical choice for anyone seeking an OE-compatible coil set with clear cross-reference data and a one-year limited warranty.