Fuel Injector 4W-7019 — Single Unit Replacement for Caterpillar 3408 & 3412 Engines | D9L, D9N & D10N Dozers

Pinpointed one faulty injector on your CAT 3408 or 3412-powered equipment? This brand-new single fuel injector is the precise, direct-fit solution. Engineered to OEM specifications for these legendary large-displacement Caterpillar engines, it restores accurate fuel atomization and consistent combustion to the affected cylinder — eliminating the rough running, power loss, or excessive smoke that a worn injector causes under heavy load.

Why Choose This Injector?

• Single Unit — Replace Only What You Need — The cost-effective choice when diagnostics confirm one faulty injector on your CAT 3408 or 3412. Get your equipment back to full power without replacing the full set.
• Direct OEM-Equivalent Fit — Engineered to match Caterpillar 3408, 3408B, 3408C, 3412, 3412B, and 3412C engine specifications. Installs without modifications for a fast, professional swap.
• 100% New Aftermarket Part — Not rebuilt or remanufactured. Full service life and reliable performance right out of the box, built for the extreme demands of large-displacement CAT engine operation.
• Restored Fuel Atomization — Precise spray pattern restores proper combustion in the affected cylinder, recovering lost horsepower and smoothing out engine operation under load.
• Wide Cross-Reference Coverage — Matches six OEM part number formats for easy verification and confident ordering.

Compatible Part Numbers

4W-7019 | 4W7019 | CA4W7019 | 0R-3536 | 0R3536 | CA0R3536

Compatible CAT Engines & Equipment

Engines: CAT 3408 | 3408B | 3408C | 3412 | 3412B | 3412C

Dozers: CAT D9L | D9N | D10N

Product Details

• Part Number: 4W-7019 / 4W7019
• Quantity: 1 Injector
• Condition: 100% New Aftermarket
• Compatible Brand: Caterpillar (CAT)
• Equipment Type: Bulldozers, Large Industrial Equipment, Marine, Generators

Need to replace more? Also available as a 4-piece injector set and a 6-piece injector set for a complete matched replacement across all cylinders and better overall value.

Don't let one worn injector hold back a legendary CAT engine — order today and ship fast from Fuel Parts Depot.