OEM MerCruiser parts tapered roller bearings

GLM aftermarket tapered bearings
OEM Mercruiser parts / upper gearcase

Tapered roller bearings
GLM Marine aftermarket timkin tapered bearings for the upper gearcase
#21510 #21511 Tapered roller bearings are used for the drive shaft housing (upper cover)
#21540 #21550 #21560 Tapered roller bearings are used for the driven gear
#21520 Tapered bearing assembly set is used for the drive gear and includes all ratios except 1.32

Driven gear bearing (upper gearcase)

MMM-21510-1.15-16-Driven-gear-top-bearing.jpg

21510 Upper cover tapered bearing 1-15/16 inches

# 21510 Tapered bearing
(1-15/16 O.D.)
OEM# 31-61100A1
$16.98

MMM-21511-1.25-32-Driven-gear-top-bearing.jpg

21511 OEM MerCruiser part 1- 25/32 inch upper tapered bearing

#21511 Tapered bearing
(1-25/32 O.D.)
OEM# 31-32575T1
$9.98

21520 bearing set assembly

# 21520 Drive gear bearing assembly
(Includes all bearing ratios except 1.32)
OEM# 31-35988A12
$100.98

MMM-21540-driven-1.65-1.84-1.94-gear-ratio-bearing.jpg

21540 MerCruiser bearing (1.65, 1.84, 1.98 ratio)

# 21540 Tapered bearing
(1.65, 1.84, 1.98 ratio)
OEM# 31-35990A1
$26.98

MMM-21550-driven-1.32-ratio-bearings.jpg

21550 Tapered bearing (1.32 ratio)

# 21550 Tapered bearing
(1.32 ratio)
OEM# 31-66818A1
$53.98

21560 Bearing.jpg

21560 MerCruiser tapered bearing (1.50 ratio)

# 21560 Tapered bearing
(1.50 ratio)
OEM# 31-32573A1
$29.98

Bearing puller or bearing installer tools click here

Contact our service tech for what type of upper driven bearing you have in the upper gearcase or measure the outside of the bearing.

There is 2 to chose from and use a 1 - 3 inch bearing slide hammer puller to take bearing out of upper lid or top.

For help troubleshooting your upper gearcase or any Mercruiser parts or in this case tools call for tech service at (416) 751-7326

omc@sterndrive.info

Do you need tech help drawing?

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9:30am - 5pm (416) 751-7326 Toll free number (877) 652-7278 Core trade-in shipping address, outdrive repair and Mercruiser parts