Stanadyne Top Cover Screw Bolt 22351 fits most Stanadyne Roosa Top Governor Cover

Description

Stanadyne 22351 Top Cover Screw Bolt for Roosa Master Governor Covers

Replacement Stanadyne top cover screw bolt, part number 22351, used to secure the top governor cover on many Roosa Master and Stanadyne diesel injection pumps.

These screws are commonly needed during injection pump reseal work, top cover gasket replacement, governor cover repair, and general pump rebuilding. If the original top cover screws are damaged, missing, stripped, rusted, or no longer reusable, this is the replacement screw commonly used on many Stanadyne / Roosa Master pump applications.

Sold individually.

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Fits Most Stanadyne / Roosa Master Pump Top Covers

This screw is commonly used on many Stanadyne and Roosa Master rotary diesel injection pump governor covers, including many pumps in the following families:

• DB
• JDB
• DBG
• DBM
• DBO
• DC
• DM
• DB2
• DB4

Important: Stanadyne and Roosa Master pumps were used on thousands of tractors, engines, trucks, and industrial applications. Fitment should be confirmed by pump model, original screw style, or parts breakdown when possible.

Part Number / Cross Reference

• 22351
• Stanadyne 22351
• Roosa Master 22351
• Top cover screw
• Top cover bolt
• Governor cover screw
• Cover hold-down screw
• Injection pump top cover screw

Common Uses

This screw may be needed when:

• Replacing a Stanadyne / Roosa Master top cover gasket
• Resealing a leaking injection pump top cover
• Removing and reinstalling the governor cover
• Repairing a pump with damaged or missing cover screws
• Rebuilding a DB, JDB, DBG, DC, DB2, or DB4 style pump
• Replacing older slotted or standard-style top cover screws
• Servicing a pump where the original screws were rounded, stripped, or corroded

If you are replacing the top cover gasket, check your existing screws before reassembly. Old screws can be difficult to reuse if the heads are damaged or if they were previously overtightened.

Tool / Bit Notice

These replacement 22351 screws may use the later tamper-resistant 5-lobe TP25 style drive.

Please note: this is not the same as a standard 6-lobe Torx bit.

Before installation, make sure you have the correct 5-lobe tamper-resistant TP25 bit with the center hole. A regular 6-lobe Torx bit will not fit correctly and may damage the screw head.

Related Part: Top Cover Gasket 27244

If you are removing the governor cover, you may also need the replacement top cover gasket.

Related gasket:

• 27244 Stanadyne / Roosa Master Top Cover Gasket

The 22351 screw is often purchased along with the 27244 gasket when resealing the top cover area of a Stanadyne or Roosa Master injection pump.

Product Features

• Genuine Stanadyne replacement screw
• Part number 22351
• Used to hold the top governor cover in place
• Fits many Roosa Master and Stanadyne diesel injection pumps
• Common replacement during top cover gasket repair
• Useful for pump reseal and rebuild work
• Sold individually
• Commonly used by diesel injection shops, tractor mechanics, and qualified DIY repair customers

Fitment Notice

Please verify your pump before ordering.

A tractor, engine, or equipment model alone is not always enough to confirm the correct injection pump parts. Many machines were built with different pump models depending on year, serial number, engine configuration, or past repairs.

If your pump has been replaced before, the correct parts may not match the original equipment listing.

Repair Disclaimer

Diesel injection pumps are precision fuel system components. This screw is sold as a replacement repair part only. Improper pump disassembly, incorrect linkage reassembly, contamination, or incorrect top cover installation can affect pump operation.

If you are not familiar with diesel injection pump repair, we recommend having the work performed by a qualified diesel injection shop.

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