Mercruiser Engine Couplers

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Liter/ Model #

Serial #

Engine Coupler

Mallory Engine Coupler

1101537370-204403018-2171 9-72502
1201537370-622971718-2171 9-72502
120 (2.5L)6229718 & UP18-2171(1) 9-72502
120 (2.5L)6229718 & UP18-2195(8) -
120 (2.5L)6229718 & UP18-2172(4) 9-72500
1402508261-622971718-2171 9-72502
140 (3.0L)6229718 & UP18-2171(1) 9-72502
140 (3.0L)6229718 & UP18-2195(8) -
140 (3.0L)6229718 & UP18-2172(4) 9-72500
140 (6 Cyl)1538930-172596018-2171 9-72502
3.0L/3.0LXC856559-F00000018-2195(6) -
1501666495-204804618-2171 9-72502
1602048022-277003118-2171 9-72502
165 (6 Cyl)2770032 & UP18-2171 9-72502
175 (4.3L)B527955 & UP18-2175(7) -
470 (224 CID) 3.7L4208730- 621803618-2413 9-72504
485 (224 CID) 3.7L4208730- 621803618-2413 9-72504
165 3.7L6170297 & UP18-2414 9-72505
170 3.7L6170297 & UP18-2414 9-72505
470 3.7L6170297 & UP18-2414 9-72505
4.3L (Generation II)D714107 & UP18-2175(7) -
185 (229 CID)6330183 & UP18-2171 9-72502
185 (262 CID)A331455 & UP18-2171(1) 9-72502
185 (262 CID)A331455 & UP18-2175(9) -
185 (262 CID)A331455 & UP18-2172(5) 9-72500
888 Ford (188 HP)3108723 & UP18-2173 9-72501
1901564539 -173090318-2171 9-72502
898 (198 HP)4762210 & UP18-2171(1) 9-72502
898 (198 HP)4762210 & UP18-2175(9) -
2006218462 & UP18-2171(1) 9-72502
2006218462 & UP18-2172(5) 9-72500
2006218462 & UP18-2175(9) -
200 (5.0L)B525982 & UP18-2175(7) -
205 (262 CID)A331455 & UP18-2171(1) 9-72502
205 (262 CID)A331455 & UP18-2172(5) 9-72500
205 (262 CID)A331455 & UP18-2175(9) -
205 (4.3L)B5257955 & UP18-2175(7) -
205 (4.3L) (Generation II)D714370 & UP18-2175(7) -
2251539620-269401418-2171 9-72502
2253385721 & UP18-2173 9-72501
225 S Ford3385721 & UP18-2173 9-72501
2284765100-621846118-2171 9-72502
2286218462 & UP18-2171(1) 9-72502
2286218462 & UP18-2175(9) -
2286218462 & UP18-2172(5) 9-72500
2306218462 & UP18-2171(1) 9-72502
2306218462 & UP18-2175(9) -
2306218462 & UP18-2172(5) 9-72500
230 (5.0L)B525982 & UP18-2175(7) -
233 Ford4173000 & UP18-2173 9-72501
2504768000-490884918-2171 9-72502
2604908850-621846118-2171 9-72502
2606218462 & UP18-2171(1) 9-72502
2606218462 & UP18-2175(9) -
2606218462 & UP18-2172(5) 9-72500
Mercruiser w/ Bravo Drive-18-2412 9-72503
260 (5.7L)B5259812 & UP18-2175(7) -
300 MR6668677 & UP18-2171(3) 9-72502
300 MR6668677 & UP18-2175(10) -
320 EFIA543604 & UP18-2175(7) -
350 MagnumA635178 & UP18-2175(7) -
454 MagnumA631894 & UP18-2175(7) -
5.7L (Bravo)B525982 & UP18-2175(7) -

Liter/ Model #

Serial #

Engine Coupler

Mallory Engine Coupler

Notes:
(1) : Early Models
(3) : MR Cast Coupling
(4) : MR Stamped Coupling
(5) : General Motors has changed the V-6 and V-8 cylinder block and crankshaft to incorporate a one-piece full circle rear seal. For this change to be made, General Motors had to redesign the cylinder block and crankshaft discontinuing the earlier style engines. Mercury has added engine coupler # 14505-A2 (18-2172/AP# 1847) to compensate for this change in design.
(6) : For engine coupler w/o yoke use 18-2321
(7) : For engine coupler w/o yoke use 18-2323
(8) : Late Models, For engine coupler w/o yoke use 18-2321
(9) : Late Models, For engine coupler w/o yoke use 18-2323
(10) : MR Stamped Coupling, For engine coupler w/o yoke use 18-2323
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Blowout
Save 23%-32% Off.
Engine Coupler Kit - Sierra
Sale-a-palooza Price: $265.49
Save: $125.33
(32% Off $390.82)
Part # 18-2175 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 18643A7
For: Mercruiser Flex plate style, late model, small crankshaft bolt pattern style engines.
Engine Coupler Kit - Sierra
Sale-a-palooza Price: $300.59
Save: $131.59
(30% Off $432.18)
Part # 18-2195 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
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Replaces OEM part #
  • MERCURY MARINE 12632A7
For: Mercruiser Flex plate style, GM 4 Cyl Engines with late style, small crankshaft bolt pattern
Engine Coupler - Sierra
Sale-a-palooza Price: $197.99
Save: $62.00
(23% Off $259.99)
Part # 18-2321 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 12632A6
Same as 18-2195 Without Yoke
For: Mercruiser Flex plate style, GM 4 Cyl Engines with late style, small crankshaft bolt pattern
Engine Coupler - Sierra
Sale-a-palooza Price: $240.29
Save: $81.76
(25% Off $322.05)
Part # 18-2323 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
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Replaces OEM part #
  • MERCURY MARINE 18643A5
Same as 18-2175 Without Yoke
For: Mercruiser Flex plate style, late model, small crankshaft bolt pattern style engines.
Engine Coupler Assembly - Sierra
Engine Coupler Assembly - Sierra
Sale-a-palooza Price: $418.49
Save: $126.50
(23% Off $544.99)
Part # 18-2412
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
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Replaces OEM part #
  • MERCURY MARINE 861523A9
  • MERCURY MARINE 18311A17
For: Mercruiser Bravo Drives
Engine Coupler Assembly - Sierra
Sale-a-palooza Price: $345.59
Save: $130.02
(27% Off $475.61)
Part # 18-2413 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
Hurry! Only 1 left in stock
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Replaces OEM part #
  • MERCURY MARINE 69354A2
For: Mercruiser 470, 485(224 cu. in.), S/N 4208730-6218036 (1976-1982)
Engine Coupler Assembly - Sierra
Sale-a-palooza Price: $333.89
Save: $157.47
(32% Off $491.36)
Part # 18-2414 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
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Replaces OEM part #
  • MERCURY MARINE 97432A2
For: Mercruiser 165, 170, 470, 3.7L S/N 6170297 & UP (1983-1989), 180, 190, 488, 3.7LX S/N 6170297 & UP (1983-1989)
Engine Coupler - Sierra
Engine Coupler - Sierra
Sale-a-palooza Price: $167.39
Save: $60.14
(26% Off $227.53)
Part # 18-2171 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins. Replaces OEM part #
  • MERCURY MARINE 76850A2
For: All Mercruiser GM Engines, Except MR/ALPHA/BRAVO with "Triangular", 3-Bolt Coupler.
Engine Coupler - Sierra
Sale-a-palooza Price: $240.29
Save: $109.05
(31% Off $349.34)
Part # 18-2172 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
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Replaces OEM part #
  • MERCURY MARINE 14505-A2
For: Use when new style block, with small crankshaft end, is replacing a Mercruiser block
Engine Coupler for Mercruiser 59826A1 59826A3, GLM 11510 - Sierra
Sale-a-palooza Price: $264.59
Save: $98.29
(27% Off $362.88)
Part # 18-2173 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins. Replaces OEM part #
  • MERCURY MARINE 59826A3
For: Mercruiser Ford Engines
Mallory Engine Coupler 9-72507
Mallory Engine Coupler 9-72507
Your Price: $267.99
Save: $54.06
(16% Off $322.05)
Part # 9-72507 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):18643A5
Fits Application:3.0L 1999-up, GM V-6 & V-8 w/MR/Alpha 1983-up
Mallory Engine Coupler 9-72506
Mallory Engine Coupler 9-72506
Your Price: $219.99
Save: $40.00
(15% Off $259.99)
Part # 9-72506 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):12632A6
Fits Application:120/2.5L/140/3.0L 1987-93, 3.0L/LX 1993-98
Mallory Engine Coupler Assembly 9-72505
Mallory Engine Coupler Assembly 9-72505
Your Price: $411.99
Save: $79.37
(16% Off $491.36)
Part # 9-72505
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):97432A2
Fits Application:MCM 3.7L 1983-89
Mallory Engine Coupler Assembly 9-72504
Mallory Engine Coupler Assembly 9-72504
Your Price: $405.99
Save: $69.62
(14% Off $475.61)
Part # 9-72504
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
Hurry! Only 1 left in stock
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):6935A2
Fits Application:MCM 470 & 485
Mallory Engine Coupler 9-72503
Mallory Engine Coupler 9-72503
Your Price: $464.99
Save: $80.00
(14% Off $544.99)
Part # 9-72503
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):18311A17, 861523A9
Fits Application:GM V-8 w/Bravo Drives
Mallory Engine Coupler 9-72502
Your Price: $192.99
Save: $34.54
(15% Off $227.53)
Part # 9-72502 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
Hurry! Only 1 left in stock
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Replaces GLM #:11500
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):76850A2
Fits Application:GM inline 4-6, V-6, & V-8 up to 350 cid
Mallory Engine Coupler 9-72501
Your Price: $309.99
Save: $52.89
(14% Off $362.88)
Part # 9-72501 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
Hurry! Only 1 left in stock
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Replaces GLM #:11510
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):59826A3
Fits Application:Ford 225,233, & 888
Mallory Engine Coupler 9-72500
Mallory Engine Coupler 9-72500
Your Price: $296.99
Save: $52.35
(14% Off $349.34)
Part # 9-72500 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 19 hrs 58 mins.
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Replaces GLM #:11520
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):14505A2
Fits Application:newer GM blocks one piece rear main seal that use a stud mount coupler, For MCM (GM) V-6 & V-8 (305 & 350 cid)
Sierra
Average Customer Review for Engine Coupler Kit - Sierra
Based On 3 Reviews | Write Review
Perfect
by Robert from Kimberly, Idaho on July 03, 2014
Excellent product and value. iBoats service is outstanding.
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coupler
by Robert from Kimberly, Idaho on June 12, 2014
Excellent value and service.
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Coupler Upgrade
by Robert from Haw River, North Carolina on August 02, 2013
...now I can grease the slip joint without removing the drive....perfect fit,arrived "the" day promised...and we are back on the water !!
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Average Customer Review for Engine Coupler - Sierra
Based On 2 Reviews | Write Review
firefighter
by Francis from Edwards, Missouri on August 19, 2011
Excellent product, rapid service and receipt of part. Would reccomend you to anyone needing parts or other boat supplies
(1 of 1 people found this review helpful)
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coupler for 165Mercruiser
by John from Sprjing City, Tennessee on August 06, 2012
Well satisfied with this replacement part.
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Based On 1 Review | Write Review
Alignment flaw in coupler
by Duane from Wolf Creek, Montana on June 17, 2012
I am a 20 year Machinist, Machine Builder. After checking your product I find the coupler flywheel to spline alignment to be 2 to 3 degrees off. Making it impossible for proper spline to gimble bearing alignment. I would like my money back or a good coupler as I know this will build heat and probably fail. Please reply as soon as possible. Sincerely, Duane Fagnan
(1 of 1 people found this review helpful)
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