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2421539 | Caterpillar C7, 3126 Fuel Injector O-Ring Kit, New (321336)

Pricing: $16.90


Engine overheating? Strange discoloration in your oil? Quality engine seals are crucial to your Caterpilar C7 performance, and when they fail, they can cause all sorts of issues. Fortunately for you, HHP has you covered! Fix up your failing seals with a New O-Ring Kit 2421539 from Highway and Heavy Parts.

Don't risk the health of your C7; buy high-quality aftermarket 2421539 O-Ring Kit from America's trusted diesel engine parts supplier. At Highway and Heavy Parts, you'll get a O-Ring Kit manufactured in an ISO 9001:2015 certified facility, ensuring quality and consistency for your Caterpilar C7. Each part is crafted with hard-wearing strength and durability to ensure your 2421539O-Ring Kit can withstand the rigors of the road. 

Guaranteed for fit and function, HHP parts have the right combination of quality and price with total support from our on-staff ASE-certified technicians. With specialized knowledge, quality products, fast shipping, and unbeatable customer service, HHP has you covered. Order your New O-Ring Kit 2421539 today!

From diagnosis through delivery, we're Highway & Heavy Parts!


Warranty:2 Year Parts and Labor Warranty
OEM Applications:196-6934, 1966934, 224-5358, 2245358, 242-1539, 2421539, 321336, FP-2421539, FP2421539, M-1966934, M-2245358, M-2421539, M1966934, M2245358, M2421539, MCBS0025, P004016

Rebuild Kit & Gasket Set OEMs

  • (1) O-ring 1814695C1
  • (1) Rectangular Sealing Ring 
  • (1) O-Ring 2373800
  • (1) O-Ring 1482903
  • (1) Plastic Sealing Ring 1495240
  • (1) Injector Backup Ring 1817073C2 


  • P004016
  • P004016
  • HHP
  • New


Shipping Information

  • Item Requires Shipping
  • 0.1 lbs.
  • W4.0500” x H0.4500” x L4.9000”

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