Bosch 3rd Generation 4 Hole Upgrade Fuel Injectors for 1999 - 2006 Jeep 4.0L Engines

Upgrade Your Jeep 4.0L with Rebuilt Bosch 4-Hole Fuel Injectors Sick of the sluggish performance from your stock Siemens single-hole injectors? Upgrade your 1999–2006 Jeep 4.0L engine with a professionally rebuilt set of Bosch 4-hole fuel injectors—the most trusted upgrade in the Jeep community. ✔️ Better fuel atomization = smoother idle and improved MPG ✔️ More responsive throttle and stronger low-end torque ✔️ 100% plug-and-play installation – no tuning, no splicing ✔️ Flow matched to within 2% using industry-leading ASNU testing ✔️ Lifetime replacement warranty included Whether you're daily driving or running bolt-on mods like intakes, headers, or a mild cam—this injector upgrade delivers real-world improvements you can feel. Jeep 4.0L Vehicles These Injectors Fit (1999–2006): Jeep Cherokee XJ Jeep Wrangler TJ Jeep Grand Cherokee WJ All Jeep 4.0L inline-six engines in this year range Each injector is inspected, ultrasonically cleaned, spray pattern verified, and flow matched bef