BDLL150S6554 Injector Nozzle Tip 5621597 for Massey Ferguson 135 150 235 255 Tractors OE Delphi CAV

Description

BDLL150S6554 Injector Nozzle Tip 5621597 for Massey Ferguson 135 150 235 255 Tractors OE Delphi CAV

This is an OE Delphi / CAV diesel injector nozzle tip, part number BDLL150S6554. This nozzle is also commonly referenced under Delphi / CAV part numbers 5621597 and 5621597A.

The BDLL150S6554 nozzle tip is used in mechanical diesel injector rebuilding for select Massey Ferguson tractors equipped with Perkins diesel engines, including popular MF 135, 150, 235, and certain 255 applications.

This is the injector nozzle tip only, not a complete assembled injector. Injector rebuilding should be performed by a qualified diesel injection shop or an experienced mechanic with the proper injector testing equipment.

Fits Select Massey Ferguson Tractor Applications

Common applications include:

Massey Ferguson 135

• Select Perkins diesel applications
• Verify by original nozzle number before ordering

Massey Ferguson 150

• Perkins engine serial number 152UA220812E and up
• Verify by original nozzle number before ordering

Massey Ferguson 235

• Select Perkins diesel applications
• Commonly listed for serial / engine suffix DS or DLS applications
• Verify by original nozzle number before ordering

Massey Ferguson 255

• Select Perkins diesel applications
• Commonly listed for engines between serial number 203UA126251DL and U531714F
• Verify carefully, as some MF 255 applications used a different nozzle

Additional Related Applications

This nozzle number also appears in cross-reference data for other Massey Ferguson, Landini, and Perkins AD3.152 / AD4.203 diesel applications. Because these tractors had production-year and fuel-system changes, the best confirmation is always the number stamped on your original injector nozzle.

Replaces / Cross Reference Numbers

Common cross-reference numbers include:

• BDLL150S6554
• 5621597
• 5621597A
• 5621110
• BDLL150S6355
• NL518
• 1446701M1
• 1446701Z1
• 2646673
• 2646688
• 0433270159
• 0 433 270 159
• DLL150S612
• DLLA150S201

Published Nozzle Specifications

• Type: Diesel injector nozzle tip
• Fuel system: Delphi / CAV / Lucas mechanical diesel injection
• Length: 59 mm
• Outside diameter: 17 mm
• Spray angle: 150°
• Spray holes: 4
• Hole diameter: 0.250 mm

Common Symptoms of Worn Injector Nozzle Tips

Replacing worn injector nozzle tips may help correct:

• Hard starting
• Excessive diesel smoke
• Rough idle
• Injector knock
• Poor fuel atomization
• Loss of power
• Increased fuel consumption
• Uneven combustion between cylinders

Injector nozzles are precision fuel-system parts. After installation, the injector should be properly tested and set to the correct opening pressure before being returned to service.

Why Use an OE Delphi / CAV Nozzle Tip?

Many Massey Ferguson tractors from this era used CAV / Lucas diesel fuel injection equipment. Delphi later continued support for many original CAV / Lucas diesel injection parts, making Delphi / CAV nozzle tips highly desirable for correct injector rebuilding.

Original-style injector nozzle tips are preferred by many diesel injection shops and tractor owners because they help maintain the correct spray pattern, fuel atomization, and combustion characteristics for the engine.

This makes BDLL150S6554 a strong choice for restoration-quality injector service, farm-use repairs, and maintaining original-style performance on classic Massey Ferguson diesel tractors.

Important Fitment Notice

Please verify your existing injector nozzle number before ordering.

The most reliable way to confirm fitment is to remove one of your old injector nozzle tips and compare the stamped number directly to BDLL150S6554, 5621597, 5621597A, or one of the listed cross-reference numbers.

Some Massey Ferguson models used different injector nozzles depending on production year, engine serial number, injector holder, and fuel-system configuration. If your old nozzle number does not match, do not assume fitment based on tractor model alone.

Keywords

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