Exhaust Manifold & Exhaust Plate for Mercury / Mariner (135 / 150 H.p (V-6)) Engine

Start Over Different Model > Different Engine Section > Exhaust Manifold and Exhaust Plate

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 ]

Engine Diagram

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 ]

# — 90484A88 — GASKET SET ( required per assembly)
		27-90484A88 - Gasket Set [ More info ] Unavailable
		18-4317 - Gasket, 27-90484A88 [ More info ] $227.58 $220.01 2 In Stock.
#1 — 90484 — GASKET, DIVIDER PLATE (2 required per assembly)
		27-90484 - Divider Plate Gasket [ More info ] Unavailable
		27-90484 1 - Gasket - Priced Individually [ More info ] $22.11 1 In Stock.
#2 — 87321 — PLATE, DIVIDER (1 required per assembly)
		87321 - Plate [ More info ] Unavailable
		87321T - Plate [ More info ] $272.00 Available to Order: Usually ships within 10 days.
#3 — 69668 — SEAL, DIVIDER PLATE (1 required per assembly)
		69668 - Divider Plate Seal [ More info ] Unavailable
		26-814754 - Seal [ More info ] $10.70 10+ In Stock.
#4 — 95067 — COVER, EXHAUST MANIFOLD (1 required per assembly)
		95067 - Exhaust Manifold Cover [ More info ] $93.99 $93.04 10+ In Stock.
#5 — 74824 — SCREW, (.312-18 x 1.250) (21 required per assembly)
		10-74824 - Screw - Priced Individually [ More info ] $1.70 4 In Stock.
#6 — 65663A 1 — COVER, RELIEF VALVE - (OLD DESIGN) (1 required per assembly)
		65663A 1 - Cover [ More info ] Unavailable
		65663A 2 - Cover Assembly [ More info ] $59.67 Available to Order: Usually ships within 10 days.
#7 — 38837 — SCREW, (.312-18 x 1.12), COVER TO CYLINDER BLOCK (OLD DESIGN) (2 required per assembly)
		10-38837 - Screw - Priced Individually [ More info ] $3.10 10 In Stock.
#8 — 88907 — GASKET, RELIEF VALVE PLATE - (OLD DESIGN) (2 required per assembly)
		27-88907 - Relief Valve Plate Gasket [ More info ] $1.93 6 In Stock.
		27-88907003 - Relief Valve Plate Gasket [ More info ] $3.70 10+ In Stock.
		18-0952-9 - Gasket 27-88907 2-Pack [ More info ] $8.19 $7.90 Available to Order: Usually ships within 10 days.
#9 — 65664A 1 — PLATE ASSEMBLY, RELIEF VALVE - (OLD DESIGN) (1 required per assembly)
		65664A 1 - Plate Assembly [ More info ] $29.44 2 In Stock.
#10 — 64877 — DIAPHRAGM (OLD DESIGN) (1 required per assembly)
		64877 - Diaphragm [ More info ] Unavailable
		64877 1 - Diaphragm [ More info ] $11.30 10+ In Stock.
#11 — 76451 — WASHER, DIAPHRAGM SCREW - (OLD DESIGN) (1 required per assembly)
		12-76451 - Washer, Diaphragm [ More info ] $2.70 10+ In Stock.
#12 — 69570 — SCREW, (#10-16 x .750), DIAPHRAGM TO PLATE (- (OLD DESIGN) (1 required per assembly)
		10-69570 - Screw [ More info ] $1.70 10+ In Stock.
#13 — 64878 — SPRING, COMPRESSION POPPET VALVE - (OLD DESIGN) (1 required per assembly)
		24-64878 - Spring, Compresion Poppet Valve [ More info ] $6.50 10+ In Stock.
#14 — 86596 — POPPET VALVE, VALVE - (OLD DESIGN) (1 required per assembly)
		86596 - Poppet Valve [ More info ] $10.90 4 In Stock.
#15 — 64872 — GROMMET, POPPET VALVE - (OLD DESIGN) (1 required per assembly)
		25-64872 - Grommet, Poppet Relief Valve [ More info ] $3.50 10+ In Stock.
#16 — 65848 — CARRIER, POPPET VALVE - (OLD DESIGN) (1 required per assembly)
		65848 - Carrier [ More info ] $3.50 10+ In Stock.
#17 — 14462A 1 — COVER, RELIEF VALVE - (NEW DESIGN) (1 required per assembly)
		14462A 1 - Cover Assembly, NLA [ More info ] Unavailable
#19 — 78690 — GASKET, RELIEF VALVE PLATE - (NEW DESIGN) (2 required per assembly)
		27-78690 - Cover To Block Gasket [ More info ] $3.42 1 In Stock.
		27-78690002 - Relief Valve Cover Gasket [ More info ] $3.90 10+ In Stock.
		18-0936-9 - Gasket 27-78690 2-Pack [ More info ] $4.99 $4.62 Available to Order: Usually ships within 10 days.
#20 — 16497A 1 — PLATE, RELIEF VALVE - (NEW DESIGN) (1 required per assembly)
		16497A 1 - Plate Kit [ More info ] $42.25 Available to Order: Usually ships within 10 days.
#21 — 14479 — DIAPHRAGM (NEW DESIGN) (1 required per assembly)
		14479 - Diaphragm [ More info ] Unavailable
		14479 1 - Diaphragm [ More info ] $19.55 3 In Stock.
#22 — 16496 — WATER DEFLECTOR (NEW DESIGN) (1 required per assembly)
		16496 - Water Deflector [ More info ] $3.90 Available to Order: Usually ships within 10 days.
#26 — 14480 — POPPET, VALVE - (NEW DESIGN) (1 required per assembly)
		14480 - Valve Poppet [ More info ] $10.30 2 In Stock.
#29 — 85303 — WASHER, POPPET SPRING - (NEW DESIGN) (1 required per assembly)
		12-85303 - Washer [ More info ] $2.60 Available to Order: Usually ships within 10 days.
#30 — 43029A 2 — PLATE ASSEMBLY, EXHAUST (BLACK & GRAY) (1 required per assembly)
		43029A 2 - Plate [ More info ] Unavailable
		43029A 5 - EXHAUST EXT PLAT,NLA [ More info ] Unavailable
#30 — 43029A 4 — PLATE ASSEMBLY, EXHAUST (OYSTER) (1 required per assembly)
		43029A 4 - EXHAUST PLATE [ More info ] Unavailable
#31 — 99664 — ELBOW, EXHAUST PLATE (1 required per assembly)
		22-99664 - Elbow [ More info ] Unavailable
		22-99664 1 - Elbow [ More info ] Unavailable
		22-99664 2 - Elbow [ More info ] $2.60 10+ In Stock.
#32 — 20033 — PIN, Dowel, LOCATING - EXHAUST PLATE (2 required per assembly)
		17-20033 - Pin -Dowel - Priced Individually [ More info ] $1.27 10+ In Stock.
		17-43044 - Pin -Dowel-solid [ More info ] $2.40 Available to Order: Usually ships within 10 days.
#33 — 70748 2 — SEAL, EXHAUST PLATE (BLACK & GRAY) (1 required per assembly)
		70748 2 - Seal, NLA [ More info ] $7.78 10+ In Stock.
#34 — 68010 — BRACKET, SEAL RETAINING (BLACK & GRAY) (1 required per assembly)
		68010 - Bracket [ More info ] $1.95 5 In Stock.
		68010 1 - Bracket [ More info ] $10.80 Available to Order: Usually ships within 10 days.
#35 — 48408 — SCREW, (#10-16 x .500), BRACKET TO EXHAUST PLATE (BLACK & GRAY) (8 required per assembly)
		10-48408 - Screw - Priced Individually [ More info ] $2.14 Available to Order: Usually ships within 10 days.
#36 — 25970 — WASHER, POWERHEAD STUD (6 required per assembly)
		12-25970 - Washer - Priced Individually [ More info ] $0.40 10+ In Stock.
		12-20553 - Washer - Priced Individually [ More info ] $1.40 10+ In Stock.
#37 — 69254 — NUT, POWERHEAD STUD (6 required per assembly)
		11-69254 - Nut, (3/4-24) [ More info ] $7.00 Available to Order: Usually ships within 10 days.
#38 — 27132 — BUSHING, EXHAUST PLATE (1 required per assembly)
		23-27132 - Bushing [ More info ] $4.51 5 In Stock.
#39 — 66727 — SCREW, (.312-18 x 1.250), EXHAUST PLATE ATTACHING (1 required per assembly)
		10-66727 - Screw - Priced Individually [ More info ] $2.90 10 In Stock.
#40 — 68783 — SCREW, (.312-18 x 2.50), EXHAUST PLATE ATTACHING (1 required per assembly)
		10-68783 - Screw - Priced Individually [ More info ] $6.40 Available to Order: Usually ships within 10 days.
#41 — 66725 — SCREW, (.375-16 x 3.50), EXHAUST PLATE ATTACHING (3 required per assembly)
		10-66725 - Screw [ More info ] Unavailable
		10-898833 - Screw [ More info ] $10.50 Available to Order: Usually ships within 10 days.
#42 — 12602 — GROMMET, EXHAUST PLATE (1 required per assembly)
		25-12602 - Grommet , 7/16 in ID - 7/8 in long [ More info ] $1.25 4 In Stock.
		25-12602 1 - Grommet [ More info ] Unavailable
		25-12602002 - Grommet (.44 I.d.) [ More info ] $4.40 Available to Order: Usually ships within 10 days.
#43 — 18103 — PLATE, COWL MOUNTING (OYSTER) (1 required per assembly)
		18103 - COWL PLATE [ More info ] Unavailable
		18103 1 - PLATE [ More info ] Unavailable
		18103 2 - PLATE,NLA [ More info ] Unavailable
#44 — 93221 — GROMMET (OYSTER) (1 required per assembly)
		25-93221 - Grommet, Water Tube [ More info ] Unavailable
		25-93221002 - Water Tube Grommet [ More info ] $3.60 Available to Order: Usually ships within 10 days.
#45 — 28636 — SCREW, (.250-20 x .750) (OYSTER) (13 required per assembly)
		10-28636 - Screw - Priced Individually [ More info ] $1.70 10+ In Stock.
#46 — 29245 — WASHER, (.281 x .500 x .060) (OYSTER) (13 required per assembly)
		12-29245 - Washer [ More info ] $0.89 10+ In Stock.
		12-8M0204649 - WASHER Note: Priced Individually [ More info ] $1.20 9 In Stock.
#47 — 56374 — NUT, (.250-20) (OYSTER) (13 required per assembly)
		11-56374 - Nut (1/4-20) [ More info ] $1.99 10+ In Stock.
		11-826709 8 - Nut - Priced Individually [ More info ] $6.60 $1.33 10+ In Stock.
#48 — 99776 — GASKET, EXHAUST PLATE (QTY. OF 2 W/OYSTER) (1 required per assembly)
		27-99776 - Exhaust Plate Gasket [ More info ] Unavailable
		27-99776 1 - Gasket [ More info ] $18.90 Available to Order: Usually ships within 10 days.
		18-2508-1-9 - Gasket, 27-99776 1, Set Of 2 [ More info ] $31.99 $30.32 1 In Stock.