5P771 | Caterpillar 6.25"/D353/D379/D398/D399 Cylinder Head Gasket Set, New

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5P771 | 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-5P771 — Gasket Kit - Cylinder Head
Line No Kit Item No Item Name Qty UOM
1 M-2A3278 Gasket 2 EA
2 M-9F7707 Ring - Retainer - Valve Group 24 EA
3 M-0L364 Lock 2 EA
4 M-4L7890 Gasket 4 EA
5 M-4L8097 Gasket 12 EA
6 M-6L4497 Gasket 6 EA
7 M-6L7816 Seal - O-ring 12 EA
8 M-6L7817 Seal - O-ring 24 EA
9 M-7L2149 Gasket 24 EA
10 M-5B3718 Seal - O-Ring 12 EA
11 M-7L6005 Gasket 1 EA
12 M-8M8509 Lock - Nut 1 EA
13 M-9M4217 Seal - O-ring 2 EA
14 M-2N570 Gasket - Regulator Housing 2 EA
15 M-2N3553 Seal 7 EA
16 M-2N3597 Seal - Rubber 6 EA
17 M-3N3220 Gasket - Cylinder Head 6 EA
18 M-3P647 Seal - O-ring 6 EA
19 M-7B280 Seal 4 EA
20 M-4H2494 Sleeve 6 EA
21 M-5H6733 Seal - O-ring 2 EA
22 M-7H2783 Gasket 12 EA
23 M-8L8227 Seal 2 EA
24 M-8L8586 2 EA
25 MCB6B6224 Ferrule and Seal Assy 48 EA
26 MCB7B2420 Ferrule and Seal Assy 36 EA
27 M-3F4550 Lock 12 EA
28 M-8N7780 Shield 12 EA
29 M-4F5607 Seal - O-Ring 12 EA
30 M-6F1069 Seal - O-Ring 12 EA
31 M-8F4994 Seal - O-ring 12 EA
32 M-8F9206 Seal - O-ring 24 EA
33 M-9F6656 Ring - Hydraulic Group 6 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.

  • 5P771

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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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