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Cummins 855 Inframe-Overhaul Engine Rebuild Kit

  • Availability:
  • OEM Number: HOK-CUM855
  • Brand: Reliance
    Brand Info x Close Reliance

    Every Reliance part is produced to exacting standards to ensure the same or better reliability as the original part. In fact, for older engines current technology is often so improved that the part we make available today may actually be better quality than the same part used to assemble the engine originally.

    New and remanufactured internal engine parts, complete cylinder heads and long block assemblies for agricultural and industrial applications supplied by RPP are warranted to be free from defects in material and workmanship under normal service and operating conditions for a period of one year from the date of installation without limitation on miles or hours of operation.

    Engine overhaul kits for heavy-duty on-highway applications supplied by RPP are warranted to be free from defects in material and workmanship under normal service and operating conditions for a period of two years from the date of installation without limitation on miles or hours of operation.

    Remanufactured clutch and non-engine parts are warranted to be free from defects in material and workmanship under normal service and operating conditions for a period of six months from the date of installation without limitation on miles or hours of operation.
This item ships for free (US only, excluding AK & HI)

Please choose your customizations:

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Engine Serial No.
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Once your order is placed, we will verify the serial number you provide to ensure every part will work for your application.

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CPL Number*
Rod Bearing Sizes*
Main Bearing Sizes*
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This product qualifies for free ground shipping.

Free Shipping is only available in the United States (48 States).

Other shipping methods available at additional costs.

Additional fees apply to AK, HI and Canada.

$1,144.80
Price may change upon customization above.

WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov

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With warehouses across the US, we ship quickly and efficiently.

Expert Advice
Expert tech advice before and after your purchase.

High Quality Parts
Our parts meet and exceed the OEM specifications.

Details:

Please Note: The Cummins 855 Rebuild Kit has an option of two different sized sleeves. If you are unsure of your sleeve size, we recommend looking for the part number on the upper flange or taking some simple measurements on the flanged portion of your liner. Here are the specifications of available liners:


Standard Sized Sleeve
Bore Diameter: 5.500"
Flange Outer Diameter: 6.585"
Flange Width: 0.355"
Sleeve Outer Diameter at Barrel: 6.297"
Length: 11.345"

Standard Size Liners should contain one of the following part numbers on the upper flange: AR11317, BM98677, S0-2203GL, S0267, WS-447, WS545, FP3801826, MIL-E-11276, 162950, 183050, 213740, 2264414, 3055099, 3801826, 00-011-7786

.020 / .040 Sized Sleeve
Bore Diameter: 5.500"
Flange Outer Diameter: 6.585"
Flange Width: 0.3755"
Sleeve Outer Diameter at Barrel: 6.337"
Length: 11.275"

.020 / .040 Size Liners should contain one of the following Part Numbers on the upper flange: 3803219, 3054936, 3065405, SO-2203GL-20


There are four types of Piston Kits used in Cummins 855 engines. Here is a brief breakdown:
  • Premium - Single Nickel Insert on top groove. Chrome Faced Top Ring
  • Premium Plus - Single Nickel Insert on top groove. Chrome Faced Top Ring & 2nd Ring
  • Premium Plus Dual Ni - Two Nickel inserts. Two Chrome Top Rings. Can only be used in engines that are BOTH piston cooled and aftercooled
TriTech - These use 3 rings instead of 4 rings (like in the premium, premium plus and dual ni). The top ring is still a keystone, but its 15 degrees instead of 20, which improves the durability (also hence why the ring sets cannot interchange). This was done to improve the oil consumption problems in the NT/855 engines (primarily for emissions). Keep in mind there are more than 1 type of TriTech cylinder kit

TriTech Single Ni-Resist Cylinder Kits are designed for those engines that are primarily operated at higher speeds (2100 RPM), seldom highly loaded at lower engine speeds. TriTech Cylinder Kits include the TriTech ring set, Part No. 3803990, which contains an in-laid chrome top ring, a ductile iron second ring, and a chrome faced “I” oil control ring.

TriTech Plus Single Ni-Resist Cylinder Kits are recommended for Formula and highly loaded engines operated mainly at 1800 RPM or higher engine speeds, or those engines equipped with compression brakes. TriTech Plus Single Ni-Resist Cylinder Kits contain a piston designed for more severe service. These kits also include a severe duty TriTech Plus ring set, Part No. 3803358, which contains a heavy in-laid chrome top ring, a chrome faced second ring, and a heavy chrome faced “I” oil control ring.

TriTech Dual Ni-Resist Cylinder Kits are designed for those engines that were originally built with dual ni-resist pistons. These cylinder kits are for engines primarily operated at 1600 RPM or higher, seldom fully loaded at lower engine speeds. TriTech Dual Ni-Resist Cylinder Kits include the TriTech ring set, Part No. 3803990, which contains an in-laid chrome top ring, a ductile iron second ring, and a chrome faced “I” oil control ring.

TriTech Plus Dual Ni-Resist Cylinder Kits are designed for those engines that are worked hard, often fully loaded at all engine speeds, and with heavy use of compression brakes. TriTech Plus Dual Ni-Resist Pistons are recommended as replacement for Single Ni-Resist pistons in engines, which have experienced heavy second ring groove, wear. The TriTech Plus Dual Ni-Resist Piston is designed for severe duty by incorporating several unique features, most visible being the anodized crown material for improved high temperature durability. These cylinder kits also include a severe duty TriTech Plus Ring Set, Part No. 3803358, which contains a heavy in-laid chrome top ring, a chrome faced second ring, and a heavy chrome faced “I” oil control ring.

Parts Included In Engine Inframe Kit:
(6) Cylinder Kits (Cylinder Liner with O-Rings, Piston, Rings, Wrist Pin)
(1) Upper Gasket Set
(1) Oil Pan Gasket
(6) Rod Bearings
(1) Main Bearing Set

Parts Included In Engine Overhaul Kit:
(6) Cylinder Kits (Cylinder Liner with O-Rings, Piston, Rings, Wrist Pin)
(1) Full Gasket Set w/ Crankshaft Seals
(6) Rod Bearings
(1) Main Bearing Set

Piston# Piston Type
3801746 Dual-Ni
3801817 Dual-Ni
3801818 Dual-Ni
3801819 Dual-Ni
3801820 Dual-Ni
3801822 Dual-Ni
3801823 Dual-Ni
3801824 Dual-Ni
3801953 Dual-Ni
3801954 Dual-Ni
3801956 Dual-Ni
3803215 Dual-Ni
3803216 Dual-Ni
3803217 Dual-Ni
3803218 Dual-Ni
3803233 Dual-Ni
3803346 Dual-Ni
3801774 Premium
3801776 Premium
3801779 Premium
3801780 Premium
3801781 Premium
3801795 Premium
3801874 Premium
3801771 Premium Plus
3801775 Premium Plus
3801777 Premium Plus
3801778 Premium Plus
3801782 Premium Plus
3801783 Premium Plus
3801796 Premium Plus
3801797 Premium Plus
3801798 Premium Plus
3801875 Premium Plus
3803209 Premium Plus
3803210 Premium Plus
3803211 Premium Plus
3803212 Premium Plus
3803213 Premium Plus
3803214 Premium Plus
3803221 Premium Plus
3803223 Premium Plus
3803224 Premium Plus
3803228 Premium Plus