3804725 | Cummins NT-N14 Upper Engine Gasket Set, New

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3804725 | Cummins NT-N14 Upper Engine 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-3804725 — Gasket Set - Upper Engine
Line No Kit Item No Item Name Qty UOM
1 M-8078 Washer - Turbocharger 3 EA
2 M-3042401 Seal 1 EA
3 M-3050667 Seal - O-ring - Oil Cooler 6 EA
4 M-3064313 Gasket - Thermostat Housing 1 EA
5 M-3066285 Gasket - Thermostat Housing 1 EA
6 M-3066311 Gasket - Rocker Lever Cover 3 EA
7 M-3068473 Gasket - Camshaft 3 EA
8 M-3069177 Gasket 1 EA
9 M-3073966 Seal - Breather Mounting 1 EA
10 M-4058790 Gasket - Cylinder Head 3 EA
11 M-4058981 Gasket - Rocker Lever Housing 3 EA
12 M-43463A Seal - O-ring - Water Bypass 2 EA
13 M-3084848 Seal - O-ring 1 EA
14 M-3087740 Seal - O-ring 1 EA
15 M-3095826 Seal - O-ring 1 EA
16 M-3823546 1 EA
17 M-3909397 Seal - Pressure Regulator 6 EA
18 M-3328464 Seal - Ring 2 EA
19 M-68910 Seal - O-ring - Water Bypass 4 EA
20 M-109080 Seal - O-ring - Thermal Outlet 4 EA
21 M-131026 Seal - O-ring - Fuel Crossover 12 EA
22 M-186780 Seal - Thermostat 1 EA
23 M-3008591 Gasket - Manifold 3 EA
24 M-3020943 Gasket 6 EA
25 M-3037537 Seal - O-ring - Turbo Oil Inle 3 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.

  • 3804725

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!

2 year warranty applies!

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Buy Now, Pay Later

Interest-Free Up To 12M

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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