5P225 | Caterpillar 6.25"/D353/D379/D398/D399 Cylinder Head Gasket Set, New

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5P225 | Caterpillar 6.25"/D353/D379/D398/D399 Cylinder Head Gasket Set, 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.

Kit Contents

Kit: M-5P225 — Gasket Kit - Cylinder Head
Line No Kit Item No Item Name Qty UOM
1 M-1A7427 Lock - Nut 7 EA
2 M-7H9832 Lock - Nut 6 EA
3 M-4L3020 Gasket 12 EA
4 M-4L6145 Gasket 8 EA
5 M-4L7907 Gasket 2 EA
6 M-4L8097 Gasket 12 EA
7 M-4L8128 Gasket 5 EA
8 M-4L8149 Gasket 6 EA
9 M-5L5032 Seal - O-ring 2 EA
10 M-6L1650 Seal - O-ring 2 EA
11 M-6L1651 Seal - O-ring 13 EA
12 M-2A3278 Gasket 2 EA
13 M-6L3352 Gasket 6 EA
14 M-6L4497 Gasket 6 EA
15 M-6L5270 Gasket 2 EA
16 M-6L5303 Gasket 2 EA
17 M-6L5366 Gasket 2 EA
18 M-6L7816 Seal - O-ring 12 EA
19 M-6L7817 Seal - O-ring 24 EA
20 M-8M4437 Seal - O-ring 6 EA
21 M-2B5721 Gasket 1 EA
22 M-9M4217 Seal - O-ring 1 EA
23 M-9M9647 Seal - O-ring 12 EA
24 M-2N3236 Gasket - Exh Manifold 6 EA
25 M-2N3597 Seal - Rubber 6 EA
26 M-3N3220 Gasket - Cylinder Head 6 EA
27 M-3S9643 Seal - Thermostat 4 EA
28 MCB6B6224 Ferrule and Seal Assy 48 EA
29 MCB7B2420 Ferrule and Seal Assy 36 EA
30 M-7B280 Seal 4 EA
31 M-8N7780 Shield 12 EA
32 M-3F4550 Lock 12 EA
33 M-8F4994 Seal - O-ring 12 EA
34 M-8F9206 Seal - O-ring 12 EA
35 M-4H5952 Gasket 12 EA
36 M-5H7704 Seal - O-ring 2 EA

Key Features

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

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.

  • 5P225

Free Standard ground shipping within the Continental US! If you need your parts in a hurry and would like to get them overnighted or expedited please give us a call and our sales reps will let you know what options are available!

2 year warranty applies!

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Buy Now, Pay Later

Interest-Free Up To 12M

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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