Logo

Parts for MerCruiser Race Engine and Drive 525 EFI Intake Plenum & Components

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 854445 SENSOR, MAP, Manifold Absolute Pressure (1 required per assembly)
SENSOR Map VOLVO PART# 854445 854445
854445OEM Part 854445 - Sensor (map) (more info) About Mercury Marine $91.25 $91.25 Add to shopping cart
3 in stock. Explain stock levels
Map Sensor 18-7668
18-7668OEM Match 18-7668 - Sensor, 854445 (more info) About Sierra Marine $74.32 $74.32 Add to shopping cart
1 in stock. Explain stock levels
#2 10-847401 SCREW, (#10-24 x .380) (1 required per assembly)
SCREW (#10-24 x . 10-847401 10-847401
10-847401OEM Part 10-847401 - Screw (more info) About Mercury Marine $1.10 $1.10 Add to shopping cart
Available to order:
Usually ships
within 8 days
#3 12-30164 WASHER, (.192 x .375 x .0312) Stainless Steel (1 required per assembly)
WASHER (.192 x .3 12-30164  
12-30164OEM Part 12-30164 - Washer - Priced Individually (more info) About Mercury Marine $1.60 $1.60 Add to shopping cart
10+ in stock. Explain stock levels
#4 840981 BRACKET, MAP Sensor Mount (1 required per assembly)
BRACKET           O - Replaced by -8M0061478  
840981This part has been superseded. BRACKET O - Replaced by -8M0061478
(more info)
    UnavailableUnavailable Parts
BRACKET 8M0061478  
8M0061478OEM Part 8M0061478 - Bracket (more info) About Mercury Marine $2.90 $2.90 Add to shopping cart
Available to order:
Usually ships
within 8 days
#5 10-71319 SCREW, (.250-20 x 3.750) (12 required per assembly)
SCREW (.250-20 x 10-71319 10-71319
10-71319OEM Part 10-71319 - Screw (more info) About Mercury Marine $4.37 $4.37 Add to shopping cart
Available to order:
Usually ships
within 8 days
#7 38-840944 NAMEPLATE, Top Of Plenum (1 required per assembly)
NAMEPLATE 38-840944  
38-840944OEM Part 38-840944 - Name Plate -525 Efi (more info) About Mercury Marine $270.00 $270.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
#8 840922T03 PLENUM ASSEMBLY, Blue (1 required per assembly) - NOTE: For Non Standard Paint Color - See Paint Color Chart For PPG Number
PLENUM ASSEMBLY B 840922T03  
840922T03OEM Part 840922T03 - Plenum Assembly (Blue) (more info) About Mercury Marine $911.43 $911.43 Add to shopping cart
Available to order:
Usually ships
within 8 days
#9 27-863112 GASKET, Idle Air Valve To Plenum (1 required per assembly)
GASKET 27-863112 27-863112
27-863112OEM Part 27-863112 - Gasket (more info) About Mercury Marine $1.80 $1.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#10 22-19688 1 FITTING, (90 Degree) (1 required per assembly)
FITTING (90 Degre 22-19688  1  
22-19688 1OEM Part 22-19688 1 - Fitting (more info) About Mercury Marine $21.83 $21.83 Add to shopping cart
Available to order:
Usually ships
within 8 days
#11 22-73817 CONNECTOR, (90 Degree) (1 required per assembly)
CONNECTOR (90 Deg 22-73817  
22-73817OEM Part 22-73817 - Connector (more info) About Mercury Marine $10.60 $10.60 Add to shopping cart
2 in stock. Explain stock levels
#12 22-32802 2 PLUG, Pipe (.125-27) Brass (1 required per assembly)
PLUG Pipe (.125-2 22-32802  2 22-32802 2
22-32802 2OEM Part 22-32802 2 - Plug - (brass) - Priced Individually (more info) About Mercury Marine $5.50 $5.50 Add to shopping cart
6 in stock. Explain stock levels
Pipe Plug, 1/8-27 Npt Pipe 18-4263
18-4263OEM Match 18-4263 - Pipe Plug, 1/8-27 NPT Pi (more info) About Sierra Marine $4.49 $3.24 Add to shopping cart
Available to order:
Usually ships
within 8 days
#13 22-68727 1 FITTING, (.250-18) 90 Degree - Brass (1 required per assembly)
FITTING (.250-18) 22-68727  1  
22-68727 1OEM Part 22-68727 1 - Fitting (more info) About Mercury Marine $22.83 $22.83 Add to shopping cart
Available to order:
Usually ships
within 8 days
#14 27-841156 GASKET, Throttle Body To Plenum (1 required per assembly)
GASKET 27-841156  
27-841156OEM Part 27-841156 - Gasket (more info) About Mercury Marine $5.36 $5.36 Add to shopping cart
Available to order:
Usually ships
within 8 days
#15 892313T02 VALVE ASSEMBLY, Idle Air - Blue (1 required per assembly) - NOTE: For Non Standard Paint Color - See Paint Color Chart For PPG Number
VALVE ASSEMBLY Id 892313T02 892313T02
892313T02OEM Part 892313T02 - Valve Assembly (more info) About Mercury Marine $170.15 $170.15 Add to shopping cart
Available to order:
Usually ships
within 8 days
#16 10-64074 SCREW, (.250-28 x .620) (2 required per assembly)
SCREW (.250-28 x 10-64074 10-64074
10-64074OEM Part 10-64074 - Screw (more info) About Mercury Marine $7.70 $7.70 Add to shopping cart
10+ in stock. Explain stock levels
#17 54-841213 CLAMP, Worm Gear (1 required per assembly)
CLAMP Worm Gear 54-841213  
54-841213OEM Part 54-841213 - Clamp (more info) About Mercury Marine $1.98 $1.98 Add to shopping cart
Available to order:
Usually ships
within 8 days
#18 841168T ARRESTOR, Idle Air (1 required per assembly)
ARRESTOR Idle Air 841168T  
841168TOEM Part 841168T - Flame Arrestor (more info) About Mercury Marine $145.57 $145.57 Add to shopping cart
Available to order:
Usually ships
within 8 days
#19 37-841211 DECAL, Idle Air Arrestor (1 required per assembly)
DECAL 37-841211  
37-841211OEM Part 37-841211 - Decal (more info) About Mercury Marine $11.58 $11.58 Add to shopping cart
Available to order:
Usually ships
within 8 days
#20 32-844172019 HOSE, (7.00 Inches) (1 required per assembly)
HOSE-7.00 INCH    O 32-844172019
32-844172019 HOSE-7.00 INCH O
(more info)
    UnavailableUnavailable Parts
#21 54-848764 CLAMP, (21 mm) (1 required per assembly)
CLAMP (21 mm) 54-848764  
54-848764OEM Part 54-848764 - Clamp (more info) About Mercury Marine $2.60 $2.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#22 848578 VALVE ASSEMBLY, Crankcase Vent (1 required per assembly)
VALVE ASSY-VENT   O - Replaced by -8M0099429 848578
848578This part has been superseded. VALVE ASSY-VENT O - Replaced by -8M0099429
(more info)
    UnavailableUnavailable Parts
VALVE ASSY-VENT   O  
8M0099429 VALVE ASSY-VENT O
(more info)
    UnavailableUnavailable Parts
#23 25-811553 GROMMET, Intake Manifold (1 required per assembly)
GROMMET 25-811553  
25-811553OEM Part 25-811553 - Grommet (more info) About Mercury Marine $25.42 $25.42 Add to shopping cart
Available to order:
Usually ships
within 8 days
#24 843447 PLATE, Throttle Cable Anchor (1 required per assembly)
PLATE 843447 843447
843447OEM Part 843447 - Plate (more info) About Mercury Marine $25.25 $25.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
#25 12-814806 WASHER, (.344 x .688 x .065) Stainless Steel (3 required per assembly)
WASHER (.344 x .6 12-814806  
12-814806OEM Part 12-814806 - Washer (more info) About Mercury Marine $1.30 $1.30 Add to shopping cart
10+ in stock. Explain stock levels
#26 10-90285 SCREW, (.312-18 x .625) (2 required per assembly)
SCREW (.312-18 x 10-90285 10-90285
10-90285OEM Part 10-90285 - Screw (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
#27 16-843445 STUD, (.250-28/.312-18 x 2.070) (1 required per assembly)
STUD (.250-28/.31 16-843445  
16-843445OEM Part 16-843445 - Stud (more info) About Mercury Marine $37.21 $37.21 Add to shopping cart
Available to order:
Usually ships
within 8 days
#28 12-69056 WASHER, (.255 x .620 x .030) Stainless Steel (2 required per assembly)
WASHER (.255 x .6 12-69056  
12-69056OEM Part 12-69056 - Washer (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
#29 23-31866 SPACER, (.256 x .313 x .625) (1 required per assembly)
SPACER (.256 x .3 23-31866  
23-31866OEM Part 23-31866 - Spacer - Priced Individually (more info) About Mercury Marine $4.10 $4.10 Add to shopping cart
10+ in stock. Explain stock levels
#31 840920T04 THROTTLE BODY ASSEMBLY, Blue, Also Includes Gasket 27-841156 (1 required per assembly) - NOTE: For Non Standard Paint Color - See Paint Color Chart For PPG Number
THROTTLE BODY ASS 840920T04 840920T04
840920T04OEM Part 840920T04 - Throttle Body Assembly (more info) About Mercury Marine $1,467.89 $1,467.89 Add to shopping cart
Available to order:
Usually ships
within 8 days
#32 11-68219 NUT, (#10-32) Stainless Steel (1 required per assembly)
NUT (#10-32) Stai 11-68219  
11-68219OEM Part 11-68219 - Nut - Priced Individually (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
10+ in stock. Explain stock levels
#33 10-843444 SET SCREW, (#10-32) (1 required per assembly)
SET SCREW (#10-32 10-843444 10-843444
10-843444OEM Part 10-843444 - Screw -set (more info) About Mercury Marine $1.14 $1.14 Add to shopping cart
Available to order:
Usually ships
within 8 days
#34 53-92170 RING, Snap (2 required per assembly)
RING Snap 53-92170  
53-92170OEM Part 53-92170 - Ring -snap (more info) About Mercury Marine $2.90 $2.90 Add to shopping cart
Available to order:
Usually ships
within 8 days
#35 843423 SHAFT, Throttle (1 required per assembly)
SHAFT 843423 843423
843423OEM Part 843423 - Throttle Shaft (more info) About Mercury Marine $253.26 $253.26 Add to shopping cart
Available to order:
Usually ships
within 8 days
#36 841219 BLADE, Throttle (1 required per assembly)
BLADE 841219 841219
841219OEM Part 841219 - Blade - Throttle (more info) About Mercury Marine $43.39 $43.39 Add to shopping cart
Available to order:
Usually ships
within 8 days
#37 10-840118 SCREW, (#8-32 x .380) (3 required per assembly)
SCREW (#8-32 x .3 10-840118 10-840118
10-840118OEM Part 10-840118 - Screw (more info) About Mercury Marine $2.50 $2.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#38 16-843427 STUD, (.312-24 x 6.375) (2 required per assembly)
STUD              O - Replaced by 16-8M0034442  
16-843427This part has been superseded. STUD O - Replaced by 16-8M0034442
(more info)
    UnavailableUnavailable Parts
STUD 16-8M0034442  
16-8M0034442OEM Part 16-8M0034442 - Stud (more info) About Mercury Marine $8.82 $8.82 Add to shopping cart
Available to order:
Usually ships
within 8 days
#39 23-849992 SPACER, Throttle Body (1 required per assembly)
SPACER 23-849992  
23-849992OEM Part 23-849992 - Spacer (more info) About Mercury Marine $6.25 $6.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
#40 24-844226 SPRING, Throttle Return (1 required per assembly)
SPRING 24-844226  
24-844226OEM Part 24-844226 - Spring (more info) About Mercury Marine $12.57 $12.57 Add to shopping cart
Available to order:
Usually ships
within 8 days
#41 843438 1 ARM, Cam Follower (1 required per assembly)
ARM 843438  1  
843438 1OEM Part 843438 1 - Arm (more info) About Mercury Marine $40.50 $40.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#42 12-856774 WASHER, (.406 x .750 x .105) Stainless Steel (1 required per assembly)
WASHER (.406 x .7 12-856774  
12-856774OEM Part 12-856774 - Washer (more info) About Mercury Marine $1.50 $1.50 Add to shopping cart
1 in stock. Explain stock levels
#43 11-826709113 NUT, (.375-24) Stainless Steel (1 required per assembly)
NUT (.375-24) Sta 11-826709113 11-826709113
11-826709113OEM Part 11-826709113 - Nut -ss - Priced Individually (more info) About Mercury Marine $5.10 $5.10 Add to shopping cart
3 in stock. Explain stock levels
#44 843439 BRACKET, Pivot Mount (1 required per assembly)
BRACKET 843439 843439
843439OEM Part 843439 - Bracket (more info) About Mercury Marine $37.16 $37.16 Add to shopping cart
Available to order:
Usually ships
within 8 days
#45 10-843443 SCREW, (#10-32 x .630) (3 required per assembly)
SCREW (#10-32 x . 10-843443 10-843443
10-843443OEM Part 10-843443 - Screw (more info) About Mercury Marine $0.68 $0.68 Add to shopping cart
Available to order:
Usually ships
within 8 days
#46 23-26954 BUSHING (2 required per assembly)
BUSHING 23-26954  
23-26954OEM Part 23-26954 - Bushing (more info) About Mercury Marine $4.20 $4.20 Add to shopping cart
9 in stock. Explain stock levels
#47 843452 CAM, Throttle - Blue (1 required per assembly) - Standard Models
ORD 8M0027533     O NLA 843452
843452 ORD 8M0027533 O NLA
(more info)
    UnavailableUnavailable Parts
CAM Throttle - Bl 8M0027533  
8M0027533OEM Part 8M0027533 - Throttle Cam- Black (more info) About Mercury Marine $213.30 $213.30 Add to shopping cart
Available to order:
Usually ships
within 8 days
#47 8M0027533 CAM, Throttle - Black (1 required per assembly) - Special Models
#48 10-843442 SHOULDER SCREW, .312-18 x 1.750) (1 required per assembly)
SHOULDER SCREW .3 10-843442 10-843442
10-843442OEM Part 10-843442 - Screw (more info) About Mercury Marine $11.74 $11.74 Add to shopping cart
Available to order:
Usually ships
within 8 days
#49 67748 ROLLER (1 required per assembly)
ROLLER 67748 67748
67748OEM Part 67748 - Roller (more info) About Mercury Marine $4.80 $4.80 Add to shopping cart
10+ in stock. Explain stock levels
#50 16-843446 STUD, (.250-20/.250-28), Throttle Cable (1 required per assembly)
STUD (.250-20/.25 16-843446  
16-843446OEM Part 16-843446 - Stud (more info) About Mercury Marine $37.65 $37.65 Add to shopping cart
Available to order:
Usually ships
within 8 days
#51 12-846673 WASHER, (.265 x .500 x .060) Stainless Steel (2 required per assembly)
WASHER (.265 x .5 12-846673  
12-846673OEM Part 12-846673 - Washer (more info) About Mercury Marine $0.80 $0.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#52 842459 END, Cable (1 required per assembly)
END 842459 842459
842459OEM Part 842459 - End- Cable (more info) About Mercury Marine $27.73 $27.73 Add to shopping cart
Available to order:
Usually ships
within 8 days
#53 11-826709109 NUT, (.250-28) Stainless Steel (1 required per assembly)
NUT (.250-28) Sta 11-826709109 11-826709109
11-826709109OEM Part 11-826709109 - Nut - Priced Individually (more info) About Mercury Marine $2.30 $2.30 Add to shopping cart
10+ in stock. Explain stock levels
#54 10-844997 SCREW, (M8 x 60) (4 required per assembly)
SCREW (M8 x 60) 10-844997 10-844997
10-844997OEM Part 10-844997 - Screw (more info) About Mercury Marine $2.99 $2.99 Add to shopping cart
Available to order:
Usually ships
within 8 days
#55 805223T SENSOR, Intake Air Temperature (1 required per assembly)
SENSOR ASSY (IAT) 805223T 805223T
805223TOEM Part 805223T - Sensor Assembly (iat) (more info) About Mercury Marine $81.75 $81.75 Add to shopping cart
Available to order:
Usually ships
within 8 days
Air Charge Temp Sender 18-7702
18-7702OEM Match 18-7702 - Sender, 805223T, 3854527 (more info) About Sierra Marine $44.99 $37.13 Add to shopping cart
1 in stock. Explain stock levels
#56 840921T02 ARRESTOR ASSEMBLY, Flame - Blue Cover (1 required per assembly) - Standard Models
ARRESTOR ASSEMBLY 840921T02 840921T02
840921T02OEM Part 840921T02 - Arrestor Assembly -Blue (more info) About Mercury Marine $659.05 $659.05 Add to shopping cart
Available to order:
Usually ships
within 8 days
#56 899898T60 ARRESTOR ASSEMBLY, Flame - Red Cover (1 required per assembly) - Special Models
ARRESTOR ASSEMBLY 899898T60  
899898T60OEM Part 899898T60 - Arrestor Assembly -red (more info) About Mercury Marine $1,307.97 $1,307.97 Add to shopping cart
Available to order:
Usually ships
within 8 days
#57 11-826709111 NUT, (.312-24) Stainless Steel (2 required per assembly)
NUT (.312-24) Sta 11-826709111 11-826709111
11-826709111OEM Part 11-826709111 - Nut - Priced Individually (more info) About Mercury Marine $3.00 $3.00 Add to shopping cart
2 in stock. Explain stock levels
S.S. Steel Locknut 18-3723-9
18-3723-9OEM Match 18-3723-9 - Lock Nut, 11-45592, 5PK (more info) About Sierra Marine $17.45 $11.42 Add to shopping cart
10 in stock. Explain stock levels
#58 12-70132 WASHER, (.323 x .563 x .063) Stainless Steel (2 required per assembly)
WASHER @5         O - Replaced by 12-8M0042642  
12-70132This part has been superseded. WASHER @5 O - Replaced by 12-8M0042642
(more info)
    UnavailableUnavailable Parts
WASHER (.323 x .5 12-8M0042642 12-8M0042642
12-8M0042642OEM Part 12-8M0042642 - Washer - Priced Individually (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
2 in stock. Explain stock levels
#59 843121 BRACKET, Vent Tube (1 required per assembly)
BRACKET 843121 843121
843121OEM Part 843121 - Bracket (more info) About Mercury Marine $16.20 $16.20 Add to shopping cart
Available to order:
Usually ships
within 8 days
#61 10-85486 SCREW, (.250-20 x .380) Stainless Steel (1 required per assembly)
SCREW (.250-20 x 10-85486 10-85486
10-85486OEM Part 10-85486 - Screw (more info) About Mercury Marine $1.30 $1.30 Add to shopping cart
Available to order:
Usually ships
within 8 days
#62 10-805400 SCREW, (#8-32 x .500) Stainless Steel (2 required per assembly)
SCREW (#8-32 x .5 10-805400 10-805400
10-805400OEM Part 10-805400 - Screw (more info) About Mercury Marine $1.20 $1.20 Add to shopping cart
Available to order:
Usually ships
within 8 days
#63 849903 SENSOR, Throttle Position (1 required per assembly)
SENSOR Throttle P 849903 849903
849903OEM Part 849903 - Sensor -tps (more info) About Mercury Marine $170.97 $170.97 Add to shopping cart
Available to order:
Usually ships
within 8 days
#- 27-843073A06 GASKET/SEAL SET, Engine Overhaul (1 required per assembly)
GASKET/SEAL SET E 27-843073A06 27-843073A06
27-843073A06OEM Part 27-843073A06 - Gasket/Seal Set (more info) About Mercury Marine $928.01 $928.01 Add to shopping cart
Available to order:
Usually ships
within 8 days
#- 841178A05 PARTIAL ENGINE ASSEMBLY (1 required per assembly)
PARTIAL ENGINE AS 841178A05  
841178A05OEM Part 841178A05 - Partial - 525 Efi (more info) About Mercury Marine $16,767.20 $16,767.20 Add to shopping cart
Available to order:
Usually ships
within 8 days