Parts for Mercury Marine Exhaust / Cooling Systems & Extension Kits Closed Cooling System (18390A6 / A8)

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Each product listed is an OEM or aftermarket equivalent part. [ Example ]

Engine section

Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
Each product listed is an OEM or aftermarket equivalent part. [ Example ]

#	18390A 8	CLOSED COOLING SYSTEM (1 required per assembly)
		18390A 8 - COOLING KT-CLOSED,NLA [ More info ] Unavailable
#	18390A 6	CLOSED COOLING SYSTEM (1 required per assembly)
		18390A 6 - COOLING KT-CLOSE,NLA [ More info ] Unavailable
#1	18390T	RESERVOIR (1 required per assembly)
		18390T - Heat Exchanger [ More info ] $1,585.64 Available to Order: Usually ships within 10 days.
#2	22-36382	FITTING, (.250-18 x .62) Brass (1 required per assembly)
		22-36382 - Plug [ More info ] $5.30 Available to Order: Usually ships within 10 days.
		18-8111-9 - Pipe Plug, 1/4 Inch, (Pack of 3) [ More info ] $10.54 $9.42 8 In Stock.
		18-4256 - Plug, 1/4 Inch Brass, Sold Individually [ More info ] $2.39 Available to Order: Usually ships within 10 days.
#3	814875	COVER, Heat Exchanger End (2 required per assembly)
		814875 - End Cover [ More info ] Unavailable
		8M0036623 - Cap -end [ More info ] $100.75 Available to Order: Usually ships within 10 days.
#4	27-814876	GASKET, End Cover (2 required per assembly)
		27-814876 - End Cover Gasket [ More info ] Unavailable
		27-803644 - End Cover Gasket [ More info ] $13.84 1 In Stock.
		27-8M0036987 - Heat Exchanger End Gasket [ More info ] $21.08 In Stock
#5	10-814877	BOLT (2 required per assembly)
		10-814877 - Bolt [ More info ] Unavailable
#6	25-814878	O-RING, Special (2 required per assembly)
		25-814878 - O-Ring [ More info ] Unavailable
		25-8M0039163 - O-ring, (3/8 X 1/8) [ More info ] $8.50 10+ In Stock.
#7	36-814879	CAP (1 required per assembly)
		36-814879 - Cap [ More info ] $24.99 1 In Stock.
		36-808108 - CAP [ More info ] $32.08 1 In Stock.
#8	18421A 1	BRACKET (1 required per assembly)
		18421A 1 - BRKT-MTG - Starboard [ More info ] Unavailable
		18421A 2 - Bracket Kit, NLA [ More info ] $100.00 2 In Stock.
#9	18431	PAD (1 required per assembly)
		18431 - Pad [ More info ] $33.67 Available to Order: Usually ships within 10 days.
#10	10-47462	SCREW, (.437-14 x 1.250) (1 required per assembly)
		10-47462 - Screw - Priced Individually [ More info ] $1.70 $1.44 10+ In Stock.
#11	13-32993	LOCKWASHER, (.437) (1 required per assembly)
		13-32993 - LockWasher - Priced Individually [ More info ] $1.60 Available to Order: Usually ships within 10 days.
#12	18423A 1	BRACKET, Port (1 required per assembly)
		18423A 1 - BRKT-MTG-PORT [ More info ] Unavailable
		18423A 2 - Bracket Kit, NLA [ More info ] $125.00 1 In Stock.
#13	18429	PAD (1 required per assembly)
		18429 - PAD,NLA [ More info ] Unavailable
#14	10-32132	SCREW, (.375-16 x 1.750) (2 required per assembly)
		10-32132 - Screw [ More info ] $2.90 1 In Stock.
#15	32-18427 2	HOSE (1 required per assembly)
		32-18427 2 - Hose [ More info ] Unavailable
#16	32-53461 70	HOSE, (48.00 Inches Bulk) (1 required per assembly) (18390A8)
		32-53461 70 - Hose -48 Inch [ More info ] $48.34 1 In Stock.
		32-865672070 - Hose -48 Inch [ More info ] Unavailable
		328M0062665 - Hose [ More info ] $91.17 Available to Order: Usually ships within 10 days.
#17	32-816284	HOSE (1 required per assembly)
		32-816284 - Hose, NLA [ More info ] Unavailable
#18	55131A 5	HOUSING ASSEMBLY, Thermostat (1 required per assembly)
		55131A 5 - Housing Assembly [ More info ] $379.57 1 In Stock.
#19	97428T 2	COVER, Thermostat (1 required per assembly)
		97428T 2 - Thermostat Cover, NLA [ More info ] $15.56 6 In Stock.
		MC-29-97428 - Thermostat Housing [ More info ] $53.00 $40.64 1 In Stock.
#20	27-48818 1	GASKET (1 required per assembly)
		27-48818 1 - Gasket - Priced Individually [ More info ] $2.90 4 In Stock.
#21	10-48115	SCREW, (.375-16 x 3.50) (2 required per assembly)
		10-48115 - Screw, NLA [ More info ] $1.67 10+ In Stock.
#22	22-36305	ELBOW, (90 Degrees) (2 required per assembly)
		22-36305 - Elbow [ More info ] Unavailable
		22-36305T - Elbow [ More info ] $37.83 5 In Stock.
		18-8216 - Brass Fitting, 22-36305 [ More info ] $33.99 $30.79 1 In Stock.
#23	32-33220 70	HOSE, (48.00 Inches Bulk) (2 required per assembly)
		32-33220 70 - Thermostat Housing Exhaust Manifold & Elbow-48IN [ More info ] Unavailable
		32-8M0062614 - Water Hose [ More info ] $68.33 In Stock
#24	71587A10	RECOVERY KIT, Coolant (Components parts can be purchased locally.) (1 required per assembly)
		71587A10 - Coolant Recovery Kit [ More info ] $93.50 In Stock
#25	71587A11	BOTTLE, Plastic (1 required per assembly)
		71587A11 - Coolant Recovery Bottle [ More info ] $73.56 1 In Stock.
#26	72058	CAP (1 required per assembly)
		72058 - Bottle Cap [ More info ] $10.90 Available to Order: Usually ships within 10 days.
#27	27-41811	GASKET (2 required per assembly)
		27-41811 - Exhaust Elbow Gasket [ More info ] $10.99 1 In Stock.
		27-860231 - Elbow To Manifold Gasket [ More info ] Unavailable
		27-863725 - GASKET [ More info ] Unavailable
		27-863725 1 - Block Off Gasket [ More info ] $18.90 10+ In Stock.
		18-0672-9 - Gasket 27-41811 2-Pack [ More info ] $29.99 $24.99 Available to Order: Usually ships within 10 days.
#28	22-55133T	TEE (1 required per assembly)
		22-55133T - Fitting [ More info ] Unavailable
		22-55133 - Fitting Tee, NLA [ More info ] Unavailable
#29	32-817439 1	HOSE (1 required per assembly)
		32-817439 1 - Hose, NLA [ More info ] Unavailable
#30	32-817439 3	HOSE (1 required per assembly)
		32-817439 3 - Molded Hose, NLA [ More info ] $28.88 4 In Stock.
#31	87-86080	SWITCH, Temperature (1 required per assembly)
		87-86080 - Switch [ More info ] $116.92 In Stock
#32	54-815504372	CLAMP, Worm Gear (AR required per assembly)
		54-815504372 - Clamp [ More info ] $15.90 Available to Order: Usually ships within 10 days.
#33	54-815504220	CLAMP, Worm Gear (AR required per assembly)
		54-815504220 - Clamp [ More info ] $7.30 Available to Order: Usually ships within 10 days.
#34	54-815504232	CLAMP, Worm Gear (2.50 Diameter) (AR required per assembly)
		54-815504232 - Clamp [ More info ] $8.60 10+ In Stock.
#35	27-53045 1	GASKET (1 required per assembly)
		27-53045 1 - Gasket - Priced Individually [ More info ] $5.50 10 In Stock.
		18-2917-9 - Gasket 27-530451 2-Pack [ More info ] $7.99 10+ In Stock.
		27-53045Q01 - Gasket [ More info ] $5.50 2 In Stock.
#36	22-818390	DRAIN COCK (1 required per assembly)
		22-818390 - Plug Assembly [ More info ] $19.58 Available to Order: Usually ships within 10 days.
#37	814863T	COOLER, Oil (1 required per assembly) (Used in 18390A6)
		814863T - Oil Cooler, NLA [ More info ] Unavailable
#38	54-814858	CLIP (2 required per assembly) (Used in 18390A6)
		54-814858 - Clip [ More info ] $3.75 9 In Stock.
#39	96116A 1	BRACKET (1 required per assembly) (Used in 18390A6)
		96116A 1 - Bracket [ More info ] Unavailable
		806394A 1 - Bracket [ More info ] Unavailable
#40	10-37612	SCREW, (.375-16 x 1.250) (1 required per assembly) (Used in 18390A6)
		10-37612 - Screw - Priced Individually [ More info ] $2.40 10+ In Stock.
#41	13-35048	LOCKWASHER, (.375) (3 required per assembly) (Used in 18390A6)
		13-35048 - LockWasher - Priced Individually [ More info ] $1.20 10+ In Stock.
#42	32-816261 1	HOSE (1 required per assembly) (Used in 18390A6)
		32-816261 1 - Hose, NLA [ More info ] $6.00 4 In Stock.
#43	32-89749 1	HOSE (1 required per assembly) (Used in 18390A6)
		32-89749 1 - Molded Hose [ More info ] $67.58 In Stock
#44	32-19081	HOSE (1 required per assembly) (Used in 18390A6)
		32-19081 - Hose, NLA [ More info ] Unavailable