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Parts for MerCruiser Race Engine and Drive 525 EFI Exhaust Header / Tailpipe Assembly

#1 843933A01 HEADER KIT, Exhaust - Starboard, Also Includes Tailpipe Gasket 27-842454 (1 required per assembly) SN# 0M956602 THRU 0M960481
843933A01 - HEADER KIT Exhaus O - Replaced by -843933T02
843933A01

This part has been superseded.

843933A01 - 843933A01 - HEADER KIT Exhaus O [ More info ]
Unavailable
Replaced by -843933T02
843933T02 - HEADER KIT Exhaus O - Replaced by -843933T03
 

This part has been superseded.

843933T02 - 843933T02 - HEADER KIT Exhaus O [ More info ]
Unavailable
Replaced by -843933T03
843933T03 - REF MR SB2010-01  O NLA
843933T03

About Mercury Marine

OEM Part

843933T03 - REF MR SB2010-01 O NLA [ More info ]
Unavailable
#1 843933T02 HEADER KIT, Exhaust - Starboard, Also Includes Tailpipe Gasket 27-842454 (1 required per assembly) SN# 0M960482 & Up
#1 843934A01 HEADER KIT, Exhaust - Port, Also Includes Tailpipe Gasket 27-842454 (1 required per assembly) SN# 0M956602 THRU 0M960481
843934A01 - HEADER KIT Exhaus O - Replaced by -843934T02
843934A01

This part has been superseded.

843934A01 - 843934A01 - HEADER KIT Exhaus O [ More info ]
Unavailable
Replaced by -843934T02
843934T02 - HEADER KIT Exhaus O - Replaced by -843934T03
 

This part has been superseded.

843934T02 - 843934T02 - HEADER KIT Exhaus O [ More info ]
Unavailable
Replaced by -843934T03
843934T03 - REF MR SB 2010-01 O NLA
843934T03

About Mercury Marine

OEM Part

843934T03 - REF MR SB 2010-01 O NLA [ More info ]
Unavailable
#1 843934T02 HEADER KIT, Exhaust - Port, Also Includes Tailpipe Gasket 27-842454 (1 required per assembly) SN# 0M960482 & Up
#2 27-840940 GASKET, Exhaust Header (2 required per assembly)
GASKET Note: must be ordered in multiples of 2 27-840940
27-840940

About Mercury Marine

OEM Part

27-840940 - Gasket - Priced Individually [ More info ]

Add to shopping cart $29.06
Available to order: Usually ships within 8 days. Explain stock levels

#3 10-821131 SCREW, (.375-16 x 1.00) (16 required per assembly)
SCREW Note: must be ordered in multiples of 2 10-821131
10-821131

About Mercury Marine

OEM Part

10-821131 - Screw - Priced Individually [ More info ]

Add to shopping cart $6.60
Available to order: Usually ships within 8 days. Explain stock levels

#4 22-806608A 1 PLUG KIT, (.500-13) Royal Blue (4 required per assembly) - Design I - Marked 22-806608
22806608A02 22-806608A 1
22-806608A 1

About Mercury Marine

OEM Part

22-806608A 1 - Plug Kit, Priced Individually [ More info ]

Add to shopping cart $2.80
2 in stock. Explain stock levels

22-806608A02 - PLUG ASSEMBLY (.5  - Replaced by 22-8M0119211
22-806608A02

This part has been superseded.

22-806608A02 - 22-806608A02 - PLUG ASSEMBLY (.5 [ More info ]
Unavailable
Replaced by 22-8M0119211
DRAIN PLUG Note: must be ordered in multiples of 5 22-8M0119211
22-8M0119211

About Mercury Marine

OEM Part

22-8M0119211 - Drain Plug, Priced Individually, .5 inch x 13 [ More info ]

Add to shopping cart $7.50
10+ in stock. Explain stock levels

DRAIN PLUG
18-4226

About Sierra Marine

OEM Match

18-4226 - Blue Drain Plug, 22-806608A1 [ More info ]

Add to shopping cart $3.99 $3.01
10+ in stock. Explain stock levels

PLUG KIT Note: must be ordered in multiples of 2   22806608Q01
22806608Q01

About Mercury Marine

OEM Part

22-806608Q01 - Plug Kit - Priced Individually [ More info ]

Add to shopping cart $7.20
Available to order: Usually ships within 8 days. Explain stock levels

#4 22-806608A02 PLUG ASSEMBLY, (.500-13) Blue (4 required per assembly) - Design II - Marked 8M2000874
#5 25-831985 O-RING, (.468 x .078) (4 required per assembly) - Design I
O RING 25-831985
 

About Mercury Marine

OEM Part

25-831985 - O-Ring [ More info ]

Add to shopping cart $4.00
Available to order: Usually ships within 8 days. Explain stock levels

#5 25-8M2000926 SEAL (4 required per assembly) - Design II
25-8M2000926 - SEAL              O - Replaced by 25-26802
 

This part has been superseded.

25-8M2000926 - 25-8M2000926 - SEAL O [ More info ]
Unavailable
Replaced by 25-26802
O RING Note: must be ordered in multiples of 5 25-26802
25-26802

About Mercury Marine

OEM Part

25-26802 - O-Ring - Priced Individually [ More info ]

Add to shopping cart $3.20
10+ in stock. Explain stock levels

O-Ring
18-7180

About Sierra Marine

OEM Match

18-7180-9 - O-Ring (PK5 ) 925055 [ More info ]

Add to shopping cart $15.41 $10.38
3 in stock. Explain stock levels

#6 22-8M0022059 BUSHING, Reducer (.750-14/.500-13) (2 required per assembly)
BUSHING Reducer (.750-1 22-8M0022059
 

About Mercury Marine

OEM Part

22-8M0022059 - Bushing [ More info ]

Add to shopping cart $25.26
Available to order: Usually ships within 8 days. Explain stock levels

#7 8M0025008 TAILPIPE ASSEMBLY (2 required per assembly)
8M0025008 - TAILPIPE ASSEMBLY O NLA
8M0025008

About Mercury Marine

OEM Part

8M0025008 - TAILPIPE ASSEMBLY O NLA [ More info ]
Unavailable
#8 54-18076 3 CLAMP, Worm Gear (4 required per assembly)
CLAMP Worm Gear 54-18076  3
 

About Mercury Marine

OEM Part

54-18076 3 - Clamp [ More info ]

Add to shopping cart $10.10
4 in stock. Explain stock levels

#9 32-842418 1 HOSE, Molded (2 required per assembly)
HOSE-MOLDED 32-842418  1
32-842418  1

About Mercury Marine

OEM Part

32-842418 1 - Molded Hose [ More info ]

Add to shopping cart $24.10 $20.63
2 in stock. Explain stock levels

#10 27-842454 GASKET, Tailpipe (2 required per assembly)
GASKET 27-842454
27-842454

About Mercury Marine

OEM Part

27-842454 - Gasket [ More info ]

Add to shopping cart $19.94
Available to order: Usually ships within 8 days. Explain stock levels

#11 11-842458 NUT, (.250-20) (2 required per assembly)
11-842458 - NUT (.250-20)     O - Replaced by 11-826711 10
 

This part has been superseded.

11-842458 - 11-842458 - NUT (.250-20) O [ More info ]
Unavailable
Replaced by 11-826711 10
NUT .312-18 11-826711 10
 

About Mercury Marine

OEM Part

1182671110 - Nut .312-18 [ More info ]

Add to shopping cart $2.70
Available to order: Usually ships within 8 days. Explain stock levels

#12 54-842456 CLAMP, Band (2 required per assembly)
54-842456 - CLAMP Band        O - Replaced by 54-8M0051201
 

This part has been superseded.

54-842456 - 54-842456 - CLAMP Band O [ More info ]
Unavailable
Replaced by 54-8M0051201
CLAMP-BAND 54-8M0051201
 

About Mercury Marine

OEM Part

548M0051201 - Clamp-BAND [ More info ]

Add to shopping cart $82.06
Available to order: Usually ships within 8 days. Explain stock levels

#13 10-842457 T BOLT, (.250-20) (2 required per assembly)
T BOLT (.250-20) 10-842457
10-842457

About Mercury Marine

OEM Part

10-842457 - T Bolt [ More info ]

Add to shopping cart $16.54
Available to order: Usually ships within 8 days. Explain stock levels

#14 22-842453406 FITTING, Restrictor (.406) (2 required per assembly)
FITTING Restrictor (.40 22-842453406
 

About Mercury Marine

OEM Part

22-842453406 - Fitting [ More info ]

Add to shopping cart $39.10
Available to order: Usually ships within 8 days. Explain stock levels

#15 22-32803 PLUG, Pipe (.375-18) Brass (2 required per assembly)
PLUG Pipe (.375-18) Bra 22-32803
22-32803

About Mercury Marine

OEM Part

22-32803 - Plug [ More info ]

Add to shopping cart $5.10
1 in stock. Explain stock levels

Pipe Plug  3/8-18 Npt Pipe
18-4264

About Sierra Marine

OEM Match

18-4264 - Pipe Plug, 3/8-18 NPT [ More info ]

Add to shopping cart $4.11 $3.51
8 in stock. Explain stock levels

#16 861776A 2 PLATE KIT, Exhaust Blockoff (1 required per assembly)
PLATE KIT-EXHAUST 861776A 2
861776A 2

About Mercury Marine

OEM Part

861776A 2 - Exhaust Plate Kit [ More info ]

Add to shopping cart $73.67
6 in stock. Explain stock levels

#17 13-41471 LOCKWASHER, (.375) (4 required per assembly)
LOCKWASHER Note: must be ordered in multiples of 5 13-41471
 

About Mercury Marine

OEM Part

13-41471 - LockWasher [ More info ]

Add to shopping cart $1.50
Available to order: Usually ships within 8 days. Explain stock levels

#18 10-98794 SCREW, (.375-16 x 1.00) (4 required per assembly)
108M0113180 10-98794
10-98794

About Mercury Marine

OEM Part

10-98794 - Screw [ More info ]

Add to shopping cart $3.20
Available to order: Usually ships within 8 days. Explain stock levels

Screw  Upper Drive Cap
18-3231

About Sierra Marine

OEM Match

18-3231 - Bolt, 10-98794 [ More info ]

Add to shopping cart $2.99 $2.41
4 in stock. Explain stock levels

#- 27-843073A06 GASKET/SEAL SET, Engine Overhaul (1 required per assembly) - NOTE: See Gasket/Seal Set - Engine Overhaul Section For Complete Parts Listing
GASKET/SEAL SET Engine 27-843073A06
27-843073A06

About Mercury Marine

OEM Part

27-843073A06 - Gasket/Seal Set [ More info ]

Add to shopping cart $974.99
Available to order: Usually ships within 8 days. Explain stock levels

#- 841178A05 PARTIAL ENGINE ASSEMBLY (1 required per assembly)
PARTIAL-525 EFI 841178A05
 

About Mercury Marine

OEM Part

841178A05 - Partial - 525 Efi [ More info ]

Add to shopping cart $17,616.04
Available to order: Usually ships within 8 days. Explain stock levels