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 before being packaged and shipped. We include brand-new orings, filters, and retainers so they're ready for a clean install right out of the box. Stop wasting fuel with outdated single-hole injectors. Upgrade to genuine Bosch 4-hole injectors. Internal upgrade chosen for best performance—no visible part numbers listed. These are authentic Bosch cores, rebuilt and flow-matched for Jeep use. ✔️ Lifetime Warranty | Fast Shipping | No-Hassle Returns 1999 Jeep Cherokee SE 4.0L 242CID l6 OHV 1999 Jeep Cherokee Sport 4.0L 242CID l6 OHV 1999 Jeep Cherokee SE 4.0L 242CID l6 OHV 1999 Jeep Cherokee Limited 4.0L 242CID l6 OHV 1999 Jeep Cherokee Classic 4.0L 242CID l6 OHV 1999 Jeep Cherokee Sport 4.0L 242CID l6 OHV 2000 Jeep Cherokee Limited 4.0L 242CID l6 OHV 2000 Jeep Cherokee Sport 4.0L 242CID l6 OHV 2000 Jeep Cherokee SE 4.0L 242CID l6 OHV 2000 Jeep Cherokee Classic 4.0L 242CID l6 OHV 2000 Jeep Cherokee Sport 4.0L 242CID l6 OHV 2000 Jeep Cherokee SE 4.0L 242CID l6 OHV 2001 Jeep Cherokee Sport 4.0L 242CID l6 OHV 2001 Jeep Cherokee SE 4.0L 242CID l6 OHV 2001 Jeep Cherokee SE 4.0L 242CID l6 OHV 2001 Jeep Cherokee Limited 4.0L 242CID l6 OHV 2001 Jeep Cherokee Classic 4.0L 242CID l6 OHV 2001 Jeep Cherokee Sport 4.0L 242CID l6 OHV 1999 Jeep Grand Cherokee Limited 4.0L 242CID l6 OHV 1999 Jeep Grand Cherokee Laredo 4.0L 242CID l6 OHV 2000 Jeep Grand Cherokee Limited 4.0L 242CID l6 OHV 2000 Jeep Grand Cherokee Laredo 4.0L 242CID l6 OHV 2001 Jeep Grand Cherokee Limited 4.0L 242CID l6 OHV 2001 Jeep Grand Cherokee Laredo 4.0L 242CID l6 OHV 2002 Jeep Grand Cherokee Laredo 4.0L 242CID l6 OHV 2002 Jeep Grand Cherokee Limited 4.0L 242CID l6 OHV 2002 Jeep Grand Cherokee Sport 4.0L 242CID l6 OHV 2003 Jeep Grand Cherokee Limited 4.0L 242CID l6 OHV 2003 Jeep Grand Cherokee Laredo 4.0L 242CID l6 OHV 2004 Jeep Grand Cherokee Special Edition 4.0L 242CID l6 OHV 2004 Jeep Grand Cherokee Limited 4.0L 242CID l6 OHV 2004 Jeep Grand Cherokee Laredo 4.0L 242CID l6 OHV 2004 Jeep Grand Cherokee SE 4.0L 242CID l6 OHV 1999 Jeep TJ Sahara 4.0L 242CID l6 OHV 1999 Jeep TJ Sport 4.0L 242CID l6 OHV 2000 Jeep TJ Sport 4.0L 242CID l6 OHV 2000 Jeep TJ Sahara 4.0L 242CID l6 OHV 2001 Jeep TJ Sahara 4.0L 242CID l6 OHV 2001 Jeep TJ Sport 4.0L 242CID l6 OHV 2002 Jeep TJ Sport 4.0L 242CID l6 OHV 2002 Jeep TJ Sahara 4.0L 242CID l6 OHV 2003 Jeep TJ Sport 4.0L 242CID l6 OHV 2003 Jeep TJ Rubicon 4.0L 242CID l6 OHV 2003 Jeep TJ Sahara 4.0L 242CID l6 OHV 2004 Jeep TJ Sport 4.0L 242CID l6 OHV 2004 Jeep TJ Rubicon 4.0L 242CID l6 OHV 2004 Jeep TJ Sahara 4.0L 242CID l6 OHV 2005 Jeep TJ Sport 4.0L 242CID l6 OHV 2005 Jeep TJ Rubicon 4.0L 242CID l6 OHV 2006 Jeep TJ Sport 4.0L 242CID l6 OHV 2006 Jeep TJ Rubicon 4.0L 242CID l6 OHV 1999 Jeep Wrangler Sport 4.0L 242CID l6 OHV 1999 Jeep Wrangler Sahara 4.0L 242CID l6 OHV 2000 Jeep Wrangler Sahara 4.0L 242CID l6 OHV 2000 Jeep Wrangler Sport 4.0L 242CID l6 OHV 2001 Jeep Wrangler Sahara 4.0L 242CID l6 OHV 2001 Jeep Wrangler Sport 4.0L 242CID l6 OHV 2001 Jeep Wrangler 60 Aniversario 4.0L 242CID l6 OHV 2002 Jeep Wrangler Sahara 4.0L 242CID l6 OHV 2002 Jeep Wrangler Sport 4.0L 242CID l6 OHV 2002 Jeep Wrangler X 4.0L 242CID l6 OHV 2003 Jeep Wrangler Sahara 4.0L 242CID l6 OHV 2003 Jeep Wrangler X 4.0L 242CID l6 OHV 2003 Jeep Wrangler X AT 4.0L 242CID l6 OHV 2003 Jeep Wrangler Rubicon 4.0L 242CID l6 OHV 2003 Jeep Wrangler Sport 4.0L 242CID l6 OHV 2004 Jeep Wrangler Rubicon 4.0L 242CID l6 OHV 2004 Jeep Wrangler Unlimited 4.0L 242CID l6 OHV 2004 Jeep Wrangler Sport 4.0L 242CID l6 OHV 2004 Jeep Wrangler X 4.0L 242CID l6 OHV 2004 Jeep Wrangler Sahara 4.0L 242CID l6 OHV 2005 Jeep Wrangler Rubicon 4.0L 242CID l6 OHV 2005 Jeep Wrangler Unlimited 4.0L 242CID l6 OHV 2005 Jeep Wrangler SE 4.0L 242CID l6 OHV 2005 Jeep Wrangler Sport 4.0L 242CID l6 OHV 2005 Jeep Wrangler X 4.0L 242CID l6 OHV 2005 Jeep Wrangler Unlimited Rubicon 4.0L 242CID l6 OHV 2006 Jeep Wrangler Unlimited 4.0L 242CID l6 OHV 2006 Jeep Wrangler X 65 Aniversario 4.0L 242CID l6 OHV 2006 Jeep Wrangler 65th Anniversary Edition 4.0L 242CID l6 OHV 2006 Jeep Wrangler SE 4.0L 242CID l6 OHV 2006 Jeep Wrangler Rubicon 4.0L 242CID l6 OHV 2006 Jeep Wrangler Sport 4.0L 242CID l6 OHV 2006 Jeep Wrangler Unlimited Rubicon 4.0L 242CID l6 OHV 2006 Jeep Wrangler X 4.0L 242CID l6 OHV