5P9581 | Caterpillar Fuel Injector Components, New

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5P9581 | Caterpillar Fuel Injector Components, New

Product Overview
This heavy-duty replacement component is engineered to meet or exceed OEM specifications for reliable performance and long service life in demanding diesel engine applications. Each unit is manufactured with strict quality control standards to help ensure proper fitment and durability in professional diesel engine rebuild environments.

Key Features

  • OE-style fitment for proper installation
  • Durable construction for demanding operating conditions
  • Engineered for dependable heavy-duty diesel performance

Kit Contents

Kit: M-5P9581 — Gasket Set - Fuel System
Line No Kit Item No Item Name Qty UOM
1 M-2F6156 Lock - Nut 1 EA
2 M-4H2494 Sleeve 2 EA
3 M-5L8991 Gasket - Cover 1 EA
4 M-6L5766 Gasket 1 EA
5 M-6L5773 Gasket - Fuel Pump 1 EA
6 M-7L7364 Gasket 1 EA
7 M-7L7368 Gasket 1 EA
8 M-8L3873 Gasket 3 EA
9 M-8L4156 Gasket 1 EA
10 M-8L4159 Gasket 1 EA
11 M-2M2489 Oil Seal 2 EA
12 M-7M9763 Lock - Nut 2 EA
13 M-8M4987 Seal - O-ring 2 EA
14 M-8M5248 Seal - O-ring 1 EA
15 M-8M5253 Seal - O-ring 1 EA
16 M-8M5260 Seal - O-ring 1 EA
17 M-8M8997 Seal - O-ring 1 EA
18 M-5P9294 Seal - Lip Type 2 EA
19 M-1S7336 Lock 2 EA
20 M-4S7458 Diaphragm 1 EA
21 M-4S7756 Seal 3 EA
22 M-5S7611 Lock - Shaft 1 EA
23 M-7S2374 Gasket 3 EA
24 M-3D2992 Seal - O-ring 6 EA
25 M-2F4159 Lock 1 EA
26 M-1H1023 Seal - O-ring 2 EA
27 M-2H3504 Lock 1 EA
28 M-8H9180 Seal - Lip Type 1 EA
29 M-8H9788 Gasket 1 EA
30 M-2J157 Seal - O-ring 2 EA
31 M-6J2419 Seal - O-ring 1 EA
32 M-9M6292 Lock 1 EA
33 M-9M6293 Lock 1 EA
34 M-2P8763 Gasket 1 EA
35 M-8H9220 Gasket 1 EA
36 M-8H9364 Gasket 1 EA
37 M-3B8453 Seal - O-ring 1 EA
38 M-9H2770 Gasket 1 EA
39 M-9H4557 Seal - O-ring 2 EA
40 M-7L552 Gasket 1 EA
41 M-4M8303 Seal - O-ring 1 EA
42 M-8S5575 Seal 1 EA
43 M-9S4671 Oil Seal 1 EA
44 M-6V8977 Seal - Fuel Transfer Pump 1 EA
45 M-4B5647 Gasket 1 EA
46 MI-15PR 1 EA
47 M-6B8241 Gasket 1 EA
48 M-1C159 Lock - Nut 1 EA
49 M-4D9986 Seal - Hydraulic 1 EA

About Interstate-McBee

Interstate-McBee is a trusted manufacturer of premium aftermarket diesel engine components. Products are manufactured under ISO 9001:2015 quality management standards and are engineered to meet or exceed OEM specifications. With decades of experience supporting the diesel and gas engine industries, Interstate-McBee components are designed to deliver consistent quality, reliability, and performance for heavy-duty engine applications.

Any mention of OEM names or OEM product ID numbers/descriptions/model numbers is intended for identification purposes only and does not indicate that it is an OEM part.

  • 5P9581
  • M-5P9578

We offer free shipping on orders $250 and above! For orders under $250, standard shipping rates apply. If you need expedited shipping such as Next Day Air or 2nd Day Air, just give us a call and one of our sales representatives will help you get the order placed within the timeline you need!

1 year warranty applies!

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Buy Now, Pay Later

Interest-Free Up To 12M

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Above The Line

Customer Service Guaranteed

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Free Ground Shipping

On All Orders!

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Premium Quality Parts

Manufacturing Since 1973

offer

Buy Now, Pay Later

Interest-Free Up To 12M

offer

Above The Line

Customer Service Guaranteed

offer

Free Ground Shipping

On All Orders!

offer

Premium Quality Parts

Manufacturing Since 1973