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Parts for Mariner 250 HP / 275 HP Crankshaft, Pistons & Connecting Rods

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 467-8784A 1 CRANKSHAFT ASSEMBLY (1 required per assembly)
CRANKSHAFT ASSY   O NLA  
467-8784A 1 CRANKSHAFT ASSY O NLA
(more info)
    UnavailableUnavailable Parts
#2 30-88268 BALL BEARING (LOWER) (1 required per assembly)
3088268T 30-88268 30-88268
30-88268OEM Part 30-88268 - Ball Bearing (more info) About Mercury Marine $76.65 $76.65 Add to shopping cart
4 in stock. Explain stock levels
BALL BEARING,NLA 30-88268T 30-88268T
30-88268TOEM Part 30-88268T - Ball Bearing, NLA (more info) About Mercury Marine $98.00 $98.00 Add to shopping cart
10+ in stock. Explain stock levels
#3 53-89531 RETAINING RING (1 required per assembly)
RING Retaining 53-89531  
53-89531OEM Part 53-89531 - Ring - Retaining (more info) About Mercury Marine $8.20 $5.54 Add to shopping cart
10+ in stock. Explain stock levels
#4 89938 SEAL (1 required per assembly)
SEAL,NLA 89938  
89938OEM Part 89938 - Seal, NLA (more info) About Mercury Marine $42.50 $42.50 Add to shopping cart
10+ in stock. Explain stock levels
#5 89939 SEAT (1 required per assembly)
SEAT,NLA 89939  
89939OEM Part 89939 - Seat, NLA (more info) About Mercury Marine $6.00 $6.00 Add to shopping cart
10+ in stock. Explain stock levels
#6 88261 1 RING (7 required per assembly)
#7 31-88270 BEARING RACE (2 required per assembly)
3188270T 31-88270  
31-88270OEM Part 31-88270 - Bearing (more info) About Mercury Marine $43.05 $43.05 Add to shopping cart
9 in stock. Explain stock levels
BEARING,NLA 31-88270T 31-88270T
31-88270TOEM Part 31-88270T - Bearing, NLA (more info) About Mercury Marine $75.00 $75.00 Add to shopping cart
10+ in stock. Explain stock levels
#8 31-88269 ROLLER BEARING (2 required per assembly)
BEARING ASSY      O - Replaced by 31-88269T  
31-88269This part has been superseded. BEARING ASSY O - Replaced by 31-88269T
(more info)
    UnavailableUnavailable Parts
BEARING ASSEMBLY 31-88269T 31-88269T
31-88269TOEM Part 31-88269T - Bearing Assembly (more info) About Mercury Marine $65.33 $65.33 Add to shopping cart
Available to order:
Usually ships
within 8 days
Main Bearing 18-1347
18-1347OEM Match 18-1347 - Bearing 31-88269T - Special Order - No Returns (more info) About Sierra Marine $66.42 Add to shopping cart
In stock - special order item. Explain stock levels
#9 782-9530A 3 PISTON (STARBOARD) (3 required per assembly) NO CASTING #
PISTON ASSY       O NLA  
782-9530A 3 PISTON ASSY O NLA
(more info)
    UnavailableUnavailable Parts
#9 782-9531A 3 PISTON (PORT) (3 required per assembly) NO CASTING #
PISTON ASSY       O NLA  
782-9531A 3 PISTON ASSY O NLA
(more info)
    UnavailableUnavailable Parts
#9 797-816879A 1 PISTON (STARBOARD_CASTING #797-816879) (3 required per assembly)
PISTON ASY-STBD,NLA 797-816879A 1 797-816879A 1
797-816879A 1OEM Part 797-816879A 1 - Piston Assembly - Stbd, NLA (more info) About Mercury Marine $100.00 $100.00 Add to shopping cart
1 in stock. Explain stock levels
#9 796-816878A 1 PISTON (PORT-CASTING #796-816878) (3 required per assembly)
PISTON ASY-PORT,NLA 796-816878A 1 796-816878A 1
796-816878A 1OEM Part 796-816878A 1 - Piston Assembly - Port, NLA (more info) About Mercury Marine $100.00 $100.00 Add to shopping cart
10+ in stock. Explain stock levels
#10 39-18282A12 PISTON RING SET (1 required per assembly)
RING SET-12 PCS,NLA 39-18282A12 39-18282A12
39-18282A12OEM Part 39-18282A12 - Rings - 12 Pcs, NLA (more info) About Mercury Marine $150.00 $150.00 Add to shopping cart
4 in stock. Explain stock levels
#11 53-88466 LOCK RING (12 required per assembly)
RING-LOCK @2      O - Replaced by 53-88466  1  
53-88466This part has been superseded. RING-LOCK @2 O - Replaced by 53-88466 1
(more info)
    UnavailableUnavailable Parts
RING-LOCK         O - Replaced by 53-832081  
53-88466 1This part has been superseded. RING-LOCK O - Replaced by 53-832081
(more info)
    UnavailableUnavailable Parts
RING-LOCK         O - Replaced by 53-832081  1  
53-832081This part has been superseded. RING-LOCK O - Replaced by 53-832081 1
(more info)
    UnavailableUnavailable Parts
LOCK RING 53-832081  1  
53-832081 1OEM Part 53-832081 1 - Lock Ring (more info) About Mercury Marine $0.80 $0.80 Add to shopping cart
2 in stock. Explain stock levels
#12 631-8185A10 CONNECTING ROD ASSEMBLY (6 required per assembly)
CONNECTING ROD    O NLA  
631-8185A10 CONNECTING ROD O NLA
(more info)
    UnavailableUnavailable Parts
#13 10-94320 SCREW (12 required per assembly)
SCREW (.375-24 x 10-94320 10-94320
10-94320OEM Part 10-94320 - Screw (more info) About Mercury Marine $6.70 $6.70 Add to shopping cart
Available to order:
Usually ships
within 8 days
#14 31-43012A 2 ROLLER BEARING ASSEMBLY (6 required per assembly)
BEARING/CAGE KIT,NLA 31-43012A 2 31-43012A 2
31-43012A 2OEM Part 31-43012A 2 - Bearing/Cage Kit, NLA (more info) About Mercury Marine $55.00 $55.00 Add to shopping cart
10+ in stock. Explain stock levels
#15 12-88263 WASHER (12 required per assembly)
THRUST WASHER 12-88263  
12-88263OEM Part 12-88263 - Washer (more info) About Mercury Marine $9.90 $6.69 Add to shopping cart
10+ in stock. Explain stock levels
Needle Bearins w/ (2) retai 18-1186
18-1186OEM Match 18-1186 - Needle Bearings With Retainers (more info) About Sierra Marine $24.49 $19.04 Add to shopping cart
Available to order:
Usually ships
within 8 days
#16 29-88258 NEEDLE BEARING (204 required per assembly)
2988258001 29-88258 29-88258
29-88258OEM Part 29-88258 - Needles - Bearing - Priced Individually (more info) About Mercury Marine $0.20 $0.20 Add to shopping cart
10+ in stock. Explain stock levels
BEARING Needle 29-88258001 29-88258001
29-88258001OEM Part 29-88258001 - Bearing Needles - Priced Individually (more info) About Mercury Marine $0.34 $0.34 Add to shopping cart
10+ in stock. Explain stock levels
#17 28-91800 KEY (1 required per assembly)
KEY Woodruff 28-91800 28-91800
28-91800OEM Part 28-91800 - Key - Priced Individually (more info) About Mercury Marine $1.63 $1.63 Add to shopping cart
1 in stock. Explain stock levels
#18 31-814409A 1 BEARING ASSEMBLY (W/O FITTING) (1 required per assembly)
BEARING,NLA 31-814409A 1 31-814409A 1
31-814409A 1OEM Part 31-814409A 1 - Bearing, NLA (more info) About Mercury Marine $100.00 $100.00 Add to shopping cart
2 in stock. Explain stock levels
#18 31-816773A 1 BEARING ASSEMBLY (WITH FITTING) (1 required per assembly)
BEARING ASSY,NLA 31-816773A 1 31-816773A 1
31-816773A 1OEM Part 31-816773A 1 - Bearing Assembly, NLA (more info) About Mercury Marine $75.00 $75.00 Add to shopping cart
10+ in stock. Explain stock levels
#19 26-41953 OIL SEAL (1 required per assembly)
SEAL Note: must be ordered in multiples of 2 26-41953 26-41953
26-41953OEM Part 26-41953 - Seal - Priced Individually (more info) About Mercury Marine $14.90 $14.90 Add to shopping cart
10+ in stock. Explain stock levels
Oil Seal 18-2016
18-2016OEM Match 18-2016 - Seal, 26-41953 (more info)
Replaces OEM #0764337
About Sierra Marine $10.99 $8.18 Add to shopping cart
10+ in stock. Explain stock levels
#20 43-41081 1 DRIVER GEAR (1 required per assembly)
DRIVER GEAR       O NLA  
43-41081 1 DRIVER GEAR O NLA
(more info)
    UnavailableUnavailable Parts
#21 25-64067 O-RING (1 required per assembly)
25823683 25-64067 25-64067
25-64067OEM Part 25-64067 - O-Ring - Priced Individually (more info) About Mercury Marine $1.65 $1.65 Add to shopping cart
10+ in stock. Explain stock levels
O-RING (1.989 x . 25-823683 25-823683
25-823683OEM Part 25-823683 - O-Ring (more info) About Mercury Marine $2.10 $2.10 Add to shopping cart
2 in stock. Explain stock levels
O-Ring 18-7414-9
18-7414-9OEM Match 18-7414-9 - O-Ring (PK5) 25-64067 (more info) About Sierra Marine $12.45 $12.45 Add to shopping cart
1 in stock. Explain stock levels
#22 12-68229 WASHER (1 required per assembly)
1233001 12-68229  
12-68229OEM Part 12-68229 - Washer (more info) About Mercury Marine $4.04 $4.04 Add to shopping cart
10+ in stock. Explain stock levels
WASHER Note: must be ordered in multiples of 2 12-33001  
12-33001OEM Part 12-33001 - Washer (more info) About Mercury Marine $4.90 $4.90 Add to shopping cart
Available to order:
Usually ships
within 8 days
#23 11-52901 NUT (1 required per assembly)
NUT (.625-18) 11-52901 11-52901
11-52901OEM Part 11-52901 - Nut (more info) About Mercury Marine $9.20 $9.20 Add to shopping cart
10+ in stock. Explain stock levels