12668390 12623116 Fuel Injectors for Sierra 1500 Yukon 5.3L V8 4.3L V6 2014-2018

Product Overview

These fuel injectors deliver precise fuel metering for improved engine performance. Designed for 2014-2018 GMC Sierra 1500 and Yukon with 5.3L V8 or 4.3L V6 engines, these fuel injectors restore proper air-fuel mixture. This set of fuel injectors is ideal for owners experiencing misfires, rough idle, or poor fuel economy.

Key Features & Performance

• Direct OEM replacement design ensures proper fitment
• High-flow injectors deliver optimal fuel atomization
• Pre-tested and matched sets for balanced performance
• Includes new O-rings and seals for a leak-free installation
• Corrosion-resistant materials for long service life

Fitment & Compatibility

• 2014-2018 GMC Sierra 1500 (5.3L V8, 4.3L V6)
• 2014-2018 GMC Yukon (5.3L V8, 4.3L V6)

Common Uses

• Replacing worn or clogged fuel injectors
• Restoring engine power and fuel efficiency
• Fixing rough idle, misfire, or check engine light issues
• Improving throttle response and overall drivability

Technical Specifications

• Part Number(s): 12668390, 12623116
• Fuel Type: Gasoline
• Engine Compatibility: 5.3L V8, 4.3L V6
• Vehicle Fitment: 2014-2018 GMC Sierra 1500, Yukon

Frequently Asked Questions

Q: Will these injectors work on my 2016 Chevy Silverado? A: These injectors are designed specifically for GMC Sierra 1500 and Yukon. Please verify compatibility with your model before purchasing.

Q: Do these injectors come with installation instructions? A: Instructions are not included, but professional installation is recommended for proper performance.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.