Login
See us on:
Visit CP on Facebook Visit CP on Instagram Visit CP on YouTube
Is your boat in the gallery?
Image Gallery  
Instructions & Guides:
Instructions  
Find Parts by Mercury Model:
OEM Part Finder  
What's popular today?
Popular Items  
What are you looking for Today?

Need Help? Call Us:

1-800-225-9871

Outside the USA? Call 707-585-9871

Categories
Departments
Manufacturers
DIAPHRAGM KIT Mercruiser 21-857005A1

Carburetor Diaphragm Kit 857005A1 - For Select 30 HP through 65 HP Mercury and Mariner 2-Cycle Outboards 

# 530-857005A1
Ask a question about this part

DIAPHRAGM KIT Mercruiser 21-857005A1

Supersedes: 21-42990A1, 21-42990A3, 21-42990A7, 21-42990A10, 21-42990A11, 21-42990A2, 21-42990A4, 21-42990A5, 21-42990A6, 21-42990A8, 21-42990A9

Supercedes: 21-42990A2, 21-42990A5, 21-42990A8, 21-42990A9, 21-42990A10, 21-42990A10

Don't know if this part is right for your application? Use our handy Mercury Replacement Parts Finder Tool to check. Make sure you know your Model, Year and Serial Number.

NOTICE: Any images shown are representational ONLY and do not necessarily depict the actual part or included items in a particular part or kit. Mercury has been known to remove items depicted in product images such as screws or gaskets from kits they make without notification. For any product content, fitment or application questions on this part please call Mercury Product Support at 920-929-5040.
MSRP: $34.78
Your Price: $27.49
 You Save: 21% off MSRP!

NOTE: This Item is a Non-Stocked, Special Order, OEM Mercury Part.
ALL OEM Mercury parts may take up to 7-10 days to ship. All OEM Mercury parts are NON-RETURNABLE! Orders placed on all OEM Mercury parts are NON-REFUNDABLE! Please contact us with the part number and we can assist you with more accurate delivery time estimate.
I Understand the shipping and return terms above and would like to add to my cart. (Please Check Box)
Additonal Info On This Product:

Applications Where This Item Is Used:

200/225/250 (3.0L) SEAPRO/MARATHON EFI - 250 (3.0L EFI)240 EFI M2 JET DRIVE - 240 EFI M2 JET DRIVE (PUMP)
40/50 JET 30 (3 CYLINDER) 2-STROKE - 40 (3 CYL.)150/175/200 EFI - V-150 (EFI)
200/225 DFI (3.0L) - 225 (DFI)75/90 HP 65 JET (3 CYLINDER) - 65 JET (3 CYL.)
40/50 JET 30 (3 CYLINDER) 2-STROKE - 30 JET (3 CYL.)200XS DFI (2.5L) - 200XS DFI (2.5L)
135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - MAGNUM III75/90/115/125 DFI 1.5L (3 CYLINDER) - 80 Jet (3 CYL.)(1.5L)
250XS / 250 SPORTXS DFI (3.0L) - 250 Sport XS225/250 3.0L EFI - 250 (3.0L EFI)
150/200 EFI (2.5L) - V-150 EFI (2.5L)210 CARB M2 JET DRIVE - 210 CARB M2 JET DRIVE (PUMP)
200/225 (3.0L)(MECHANICAL) - 225 (DFI) 3.0L100/115/125 HP 80 JET (4 CYLINDER) - 80 JET
135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - 140 JETJP5 3.0L DFI - JP 3.0L DFI
135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - V-150175XR2 JET DRIVE - 175XR2 JET DRIVE (PUMP)
250 SPORTXS DFI (3.0L) - 250 Sport XS225/225 SEAPRO/MARATHON (3.0L) CARB - 225 MARATHON (3.0L CARB)
300 PROMAX/SUPER MAGNUM (3.0L) - 300 (3.0L EFI) SuperMagnum75/90 HP (3 CYLINDER) - 90 (3 CYL.)
55/60 JET 40/45 (3 CYLINDER) - 55 (3 CYL.)200/225/250 (3.0L) EFI - 250 (3.0L EFI)
200XS SST - 200XS SST240 EFI JET DRIVE - 240 EFI JET DRIVE (PUMP)
100/115/125 HP 80 JET (4 CYLINDER) - 115 (4 CYL.)115/125 HP 80 JET (4 CYLINDER) - 115 (4 CYL.)
75/90 HP (3 CYLINDER) - 75 (3 CYL.)55/60 JET 40/45 (3 CYLINDER) - 40 JET
240 EFI JET DRIVE - 240 EFI JET DRIVE (POWERHEAD)135/150 DFI (2.5L) - V-135 DFI (2.5L)
55/60 JET 40 (3 CYLINDER) - 55 (3 CYL.)240 EFI AND 240 EFI M2 JET DRIVE - 240 EFI M2 JET DRIVE (PUMP)
135/150/175 DFI (2.5L) - 110 Jet (2.5L)200 OPTIMAX V6 DFI - 200 PRO XS (DFI) 3.0L
300XS (3.2L) - 300XS (3.2L DFI)200/225/250/200 PRO XS (3.0L)(MECHANICAL) - 200 PRO XS (DFI) 3.0L
50/55/60 HP JET 45 - 50 (3 CYL.)115/125 HP 80 JET (4 CYLINDER) - 80 JET
55/60 JET 40 (3 CYLINDER) - 60 (3 CYL.)75/90 HP 65 JET (3 CYLINDER) - 90 (3 CYL.)
175 PROXS (2.5L) - 175 PROXS (2.5L)200/225/250 (3.0L) SEAPRO/MARATHON EFI - 225 (3.0L EFI)
210 CARB JET DRIVE - 210 CARB JET DRIVE (PUMP)225/250 PRO XS (3.0L) - 250 PRO XS (3.0L DFI)
75/90/115/125 DFI 1.5L (3 CYLINDER) - 125 DFI (3 CYL.)(1.5L)75/90 HP 65 JET (3 CYLINDER) - 65 JET
200/225 (3.0L DFI) - 225 (DFI)115/135/150 DFI (2.5L) - V-135 DFI (2.5L)
200/225/250 (3.0L) SEAPRO/MARATHON EFI - 200 (3.0L EFI)55/60 JET 40 (3 CYLINDER) - 40 JET
50/55/60 HP JET 45 - 60 (3 CYL.)PARTS MANUAL 300X (3.0L EFI) PRO MAX - 300X (3.0L EFI) PRO MAX
2.5XS DFI (2.5L) - 2.5XS 2.5L DFI250XB (3.0L EFI) - 250XB (3.0L EFI)
200/225/250 (3.0L) SEAPRO/MARATHON EFI - 3.0L EFI MARATHON50/55/60 HP JET 45 - 45 JET
75/90 HP 65 JET (3 CYLINDER) - 75 (3 CYL.)150 PRO XS (2.5L) - 150 Pro XS (2.5L)
250 EFI LONG (3.0L) - 250 LONG (3.0L)(EFI)200/225/250 (3.0L) SEAPRO/MARATHON EFI - 225 (3.0L EFI) SEAPRO
250XS DFI (3.0L) - 250XS (3.0L DFI)200/225/250 (3.0L) SEAPRO/MARATHON EFI - 3.0L EFI SEAPRO
135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - V-140 (INTERNATIONAL)200/225 DFI (3.0L)(DTS) - 225 (3.0L-DFI)(DTS)
55/60 JET 40/45 (3 CYLINDER) - 45 JET240 EFI M2 JET DRIVE - 240 EFI M2 JET DRIVE (POWERHEAD)
200/225 DFI (3.0L) - 225 (DFI) 3.0L135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - V-200
300 PROMAX/SUPER MAGNUM (3.0L) - 300 (3.0L EFI) ProMax250XS / 250 SPORTXS DFI (3.0L) - 250XS (3.0L DFI)
135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - XR-6250 PRO XS (3.0L) - 250 PRO XS (3.0L DFI)
225 EFI PROMAX/SUPERMAGNUM - 225 EFI PRO MAX/SUPER MAG75/90/115 DFI - 90 DFI (3 CYL.)(1.5L)
225XS / 225 SPORT XS DFI (3.0L) - 225 SPORT XS30/40 (2 CYLINDER) 2-STROKE - 30 (2 CYL.)
55/60 JET 40/45 (3 CYLINDER) - 60 (3 CYL.) BIGFOOT200/225 DFI (3.0L) - 200 (DFI)
75/90/115 DFI 1.5L (3 CYLINDER) - 115 DFI (3 CYL.)(1.5L)50/55/60 HP JET 45 - 55 (3 CYL.)
75/90/115 DFI 1.5L (3 CYLINDER) - 80 Jet (3 CYL.)(1.5L)100/115/125 HP 80 JET (4 CYLINDER) - 100 (4 CYL.)
300X EFI (3.0L) - 300X (3.0L EFI) PRO MAX225 PRO XS (3.0L) DFI - 225 PRO XS (3.0L DFI)
210 CARB JET DRIVE - 210 CARB JET DRIVE (POWERHEAD)200/225/250/200 PRO XS (3.0L)(MECHANICAL) - 250 (DFI) 3.0L
225 SPORT XS DFI (3.0L) - 225 SPORT XS (3L)150/175/200 EFI (2.5L) - V-150 EFI (2.5L)
240 EFI AND 240 EFI M2 JET DRIVE - 240 EFI JET DRIVE (POWERHEAD)135/140/150/200/XR6/MAGNUM III/140JET (2.5L)(CARB) - V-135
200/225/250/200 PRO XS (3.0L)(MECHANICAL) - 225 (DFI) 3.0LJP 3.0L DFI - JP 3.0L DFI
200XS DFI (2.5L) ROS - 200XS DFI (2.5L) ROS225X EFI PROMAX - 225X EFI PROMAX
115 PRO XS 1.5L - 3 CYLINDER - 115 Pro XS (3 CYL.)(1.5L)40/50 (3 CYLINDER) 2-STROKE - 40 (3 CYL.)
40/50 (3 CYLINDER) 2-STROKE - 50 (3 CYL.)210 CARB M2 JET DRIVE - 210 CARB M2 JET DRIVE (POWERHEAD)
175 XR2 JET DRIVE - 175XR2 JET DRIVE (PUMP)75/90/115 DFI - 115 DFI (3 CYL.)(1.5L)
135/150/175 DFI (2.5L) - V-175 DFI (2.5L)135/150/175 DFI (2.5L) - V-175 DFI (2.5L)
Reviews On This Product:
(0.00)stars out of 5
# of Ratings: 0
(Only registered customers can rate)
Loading...