TT466: UPDATED OIL PUMP FOR
MILWAUKEE-EIGHT ENGINES
2019-08-20
Engine

APPLIES TO

SYMPTOMS

Milwaukee-Eight® engines

• Oil Flow or Oil Pump

Reason for Technical Tip Bulletin
To notify dealers that a new oil pump was put into production on some late 2019 and all 2020
Milwaukee-Eight® engines, all models.
See Figure 2. The new oil pumps are retrofittable to all previous years and models that have the
Milwaukee-Eight engine. If replacing the oil pump on 2017 - 2019 vehicle with a Milwaukee-Eight
engine and pump should only be install as a complete unit. It is important to note that the new
oil pumps, or their internal components, are not compatible with old oil pump versions.
The 2020 oil pumps are identifiable by the following:
1. See Figure 1. The oil pump cover has an identifying tang (3) on the cover housing near the
front lower bolt hole.
2. The return gerotor has an updated 8 lobes, compared to the previous version that had a 10
lobe design.
3. New part numbers and casting numbers (on the pump housing oil return pick-up (1) and the
casting number on the pump cover (2)) can be seen in Table 1.
1381555

3

2

1

1. Housing casting number
3. Identifying tang
2. Cover casting number
Figure 1. Oil Pump Casting Number Location

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Table 1. New Pump Numbers
Item Description
Oil Pump Assy, Oil
Oil Pump Assy, Water
Oil Pump Cover Assy

Part No.
(1)
62400247
(1)
62400248
62400245

Casting No.
62400236
62400240
62400244

(1) When ordering oil pump assembly (Part No. 62400247 or 62400248) the oil pump cover comes as part of the assembly.

1376722

2

1

3
4
8
5
6
7
Figure 2. New Oil Pump Kits

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Table 2. New Oil Pump Kits
Kit Part No.

Assembly
Description

Index
No.
1
1

62400247 - Oil
62400248 - Water

Oil Pump
Assembly

2
3
4
5
6
7
8
8

Part Description
Pump housing - oil
(includes index no.
2, 5, 6, 7)
Pump housing - water
(includes index no.
2, 5, 6, 7)
Gerotor
Seal
Cover
(includes index no. 3)
Roll pin
Relief valve
Spring
Gerotor, feed - oil
Gerotor, feed - water

Part No.
62400238
62400242
62400233
62400205
62400245
601
26400-82B
26210-99
62400126
62400055

Resolution
See Figure 2. When ordering a oil pump's individual components the old part numbers will be
obsoleted and superseded to the new part number. Only the 2020 oil pump can be ordered as
a complete replacement kit. Refer to Table 2.

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