Fuel Injection Nozzle Seal O-Ring Kit for John Deere 300 Series Diesel Engine Tractors

Description

When your John Deere starts showing signs of fuel leaks around the injectors or you’re getting inconsistent fuel delivery, it’s often these small but critical seals that need attention. This installation kit for pencil-type injectors keeps your fuel system sealed tight and working properly, preventing costly fuel waste and maintaining the precise fuel delivery your engine needs.

What You’re Getting

• Complete seal kit with 0.074 inch seal and 0.452 inch spacer – everything needed for proper injector installation
• Precision-manufactured components that restore factory-tight seals around your pencil-type injectors
• Quality materials designed to handle diesel fuel and high-pressure fuel system conditions
• Compatible with injectors AR89564, RE37503, RE36935, RE36939 for reliable performance

Built for Real Farm Work

This kit works with pencil-type injectors for 300 Series diesel engines found in a huge range of John Deere equipment – from utility tractors and row-crop machines to combines, loader backhoes, and construction equipment. Whether you’re running a 1020 for general farm work or operating a 4030 during busy seasons, proper injector sealing keeps your diesel engine running clean and efficient.

Made to Last

These seals are built to handle the constant pressure changes and temperature cycling that fuel injection systems go through. The materials resist diesel fuel, biodiesel blends, and the additives in modern fuels that can quickly deteriorate inferior seals. Cleanliness is absolutely critical – any contamination will destroy new seals quickly, so these components are manufactured to strict standards.

Good to Know

This is typically an installation best handled by someone with fuel injection experience, as proper procedures are critical for preventing contamination and damage. Disassemble carefully, noting the orientation of all components. Replace all seals even if some look okay – they’ve all seen the same service hours. Keep everything clean during installation and use the correct torque specs to ensure proper sealing without overtightening.