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Parts for MerCruiser Race Engine and Drive 420 GM 454 V-8 1987-1989 Exhaust Manifold / Elbow (Mercruiser System)

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 13588 1 MANIFOLD, Exhaust (2 required per assembly)
MANIFOLD,NLA 13588  1  
13588 1OEM Part 13588 1 - Manifold (more info) About Mercury Marine $400.00 $400.00 Add to shopping cart
1 in stock. Explain stock levels
#2 27-46820 GASKET, Exhaust Manifold To Cylinder Head (2 required per assembly)
GASKET Note: must be ordered in multiples of 2 27-46820 27-46820
27-46820OEM Part 27-46820 - Gasket - Priced Individually Long (more info) About Mercury Marine $19.60 $16.78 Add to shopping cart
4 in stock. Explain stock levels
Gasket 18-0418
18-0418OEM Match 18-0418 - Manifold Gasket Big Bk Chevy (more info)
Replaces OEM #3852472
About Sierra Marine $14.49 $11.74 Add to shopping cart
10+ in stock. Explain stock levels
#3 10-37612 SCREW, (.375-16 x 1.250) (4 required per assembly)
SCREW (.375-16 x 10-37612 10-37612
10-37612OEM Part 10-37612 - Screw - Priced Individually (more info) About Mercury Marine $1.60 $1.60 Add to shopping cart
4 in stock. Explain stock levels
#3 10-812567 SCREW, (.375-16 x 1.625) (8 required per assembly)
SCREW (.375-16 x 10-812567 10-812567
10-812567OEM Part 10-812567 - Screw (more info) About Mercury Marine $6.25 $6.25 Add to shopping cart
1 in stock. Explain stock levels
#4 12-20553 WASHER, (.406 x .734 x .063) (16 required per assembly)
WASHER (.406 x .7 12-20553  
12-20553OEM Part 12-20553 - Washer - Priced Individually (more info) About Mercury Marine $1.10 $1.10 Add to shopping cart
Available to order:
Usually ships
within 8 days
#5 12-20086 WASHER, (.390 x .620 x .060) (8 required per assembly)
WASHER (.390 x .6 12-20086  
12-20086OEM Part 12-20086 - Washer - Priced Individually (more info) About Mercury Marine $1.20 $1.20 Add to shopping cart
Available to order:
Usually ships
within 8 days
#6 16-49545 STUD (4 required per assembly)
STUD (3/8 x 1.75) 16-49545 16-49545
16-49545OEM Part 16-49545 - Stud - Priced Individually (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
4 in stock. Explain stock levels
#7 11-25269 NUT, (.375-24) (4 required per assembly)
NUT (.375-24) 11-25269 11-25269
11-25269OEM Part 11-25269 - Nut - Priced Individually (more info) About Mercury Marine $1.80 $1.80 Add to shopping cart
Available to order:
Usually ships
within 8 days
#8 22-36382 FITTING, (.250-18 x .62) Brass (4 required per assembly)
FITTING (.250-18 22-36382 22-36382
22-36382OEM Part 22-36382 - Plug (more info) About Mercury Marine $3.90 $3.90 Add to shopping cart
2 in stock. Explain stock levels
Pipe Plug 18-8111-9
18-8111-9OEM Match 18-8111-9 - Pipe Plug (PK3) (more info) About Sierra Marine $10.77 $7.50 Add to shopping cart
10+ in stock. Explain stock levels
#9 22-36305 ELBOW (2 required per assembly)
ELBOW             O - Replaced by 22-36305T  
22-36305This part has been superseded. ELBOW O - Replaced by 22-36305T
(more info)
    UnavailableUnavailable Parts
ELBOW 22-36305T 22-36305T
22-36305TOEM Part 22-36305T - Elbow (more info) About Mercury Marine $31.70 $27.14 Add to shopping cart
Available to order:
Usually ships
within 8 days
Fitting, Brass 18-8216
18-8216OEM Match 18-8216 - Brass Fitting, 22-36305 (more info) About Sierra Marine $25.54 $19.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#10 27-813714 GASKET, Exhaust Elbow (2 required per assembly)
GASKET            O NLA  
27-813714 GASKET O NLA
(more info)
    UnavailableUnavailable Parts
#11 10-15007 SCREW, (.375-16 x 6.25) (8 required per assembly)
SCREW 10-15007 10-15007
10-15007OEM Part 10-15007 - Screw (more info) About Mercury Marine $20.00 $20.00 Add to shopping cart
10+ in stock. Explain stock levels
#13 13-35048 LOCKWASHER, (.375) (4 required per assembly)
LOCKWASHER (.375) 13-35048 13-35048
13-35048OEM Part 13-35048 - LockWasher - Priced Individually (more info) About Mercury Marine $0.90 $0.90 Add to shopping cart
10+ in stock. Explain stock levels
#16 13846 1 ELBOW, Exhaust, Style I (2 required per assembly)
REF MCM SB 90-04  O NLA  
13846 1 REF MCM SB 90-04 O NLA
(more info)
    UnavailableUnavailable Parts
#17 27-13848 GASKET, Exhaust Pipe, Style I (2 required per assembly)
GASKET Exhaust Pi 27-13848 27-13848
27-13848OEM Part 27-13848 - Gasket (more info) About Mercury Marine $13.41 $13.41 Add to shopping cart
6 in stock. Explain stock levels
#18 13851A 1 PIPE ASSEMBLY, Exhaust, Style I (2 required per assembly)
PIPE ASSY-EXHAUST O NLA  
13851A 1 PIPE ASSY-EXHAUST O NLA
(more info)
    UnavailableUnavailable Parts
#19 18069 DEFLECTOR, Exhaust, Style I (2 required per assembly)
DEFLECTOR 18069 18069
18069OEM Part 18069 - Deflector (more info) About Mercury Marine $39.78 $39.78 Add to shopping cart
10+ in stock. Explain stock levels
#20 17766 1 ELBOW, Exhaust, Style II (2 required per assembly)
EXHAUST ELBOW 17766  1 17766  1
17766 1OEM Part 17766 1 - Exhaust Elbow (more info) About Mercury Marine $500.00 $500.00 Add to shopping cart
1 in stock. Explain stock levels
#21 27-18238 GASKET, Exhaust Pipe, Style II (2 required per assembly)
GASKET Exhaust Pi 27-18238  
27-18238OEM Part 27-18238 - Gasket (more info) About Mercury Marine $13.41 $13.41 Add to shopping cart
10+ in stock. Explain stock levels
#22 15998A 1 PIPE ASSEMBLY, Exhaust, Style II (2 required per assembly)
PIPE ASSY-EXHAUS,NLA 15998A 1  
15998A 1OEM Part 15998A 1 - Exhaust Pipe Assembly, NLA (more info) About Mercury Marine $700.00 $700.00 Add to shopping cart
2 in stock. Explain stock levels
#23 32-18230 5 HOSE, Exhaust, Style II (2 required per assembly)
HOSE              O NLA  
32-18230 5 HOSE O NLA
(more info)
    UnavailableUnavailable Parts
#24 54-18076 5 CLAMP, Worm Gear, Style II (4 required per assembly)
CLAMP Worm Gear 54-18076  5  
54-18076 5OEM Part 54-18076 5 - Clamp (more info) About Mercury Marine $8.34 $8.34 Add to shopping cart
Available to order:
Usually ships
within 8 days
#22A 42-813646 1 MUFFLER, Exhaust, Style II With Muffler (2 required per assembly)
MUFFLER           O NLA  
42-813646 1 MUFFLER O NLA
(more info)
    UnavailableUnavailable Parts
#24 54-18076 4 CLAMP, Worm Gear, Style II With Muffler (4 required per assembly)
CLAMP Worm Gear 54-18076  4  
54-18076 4OEM Part 54-18076 4 - Clamp (more info) About Mercury Marine $6.25 $6.25 Add to shopping cart
Available to order:
Usually ships
within 8 days
#- 27-13218A 1 GASKET SET (1 required per assembly)
GASKET SET        O NLA  
27-13218A 1 GASKET SET O NLA
(more info)
    UnavailableUnavailable Parts