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

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 814901A 5 MANIFOLD ASSEMBLY, Exhaust - Port (1 required per assembly)
MANIFOLD ASY-PORT O - Replaced by -8M0084206 814901A 5
814901A 5This part has been superseded. MANIFOLD ASY-PORT O - Replaced by -8M0084206
(more info)
    UnavailableUnavailable Parts
MAIFOLD ASY-PORT 8M0084206  
8M0084206OEM Part 8M0084206 - Manifold Assembly - Port (more info) About Mercury Marine $2,067.62 $2,067.62 Add to shopping cart
Available to order:
Usually ships
within 8 days
#1 814901A 6 MANIFOLD ASSEMBLY, Exhaust - Starboard (1 required per assembly)
MANIFOLD ASY-STBD O - Replaced by -814901T 6  
814901A 6This part has been superseded. MANIFOLD ASY-STBD O - Replaced by -814901T 6
(more info)
    UnavailableUnavailable Parts
MANIFOLD ASSEMBLY 814901T 6 814901T 6
814901T 6OEM Part 814901T 6 - Manifold Assembly, Starboard Side (more info) About Mercury Marine $2,067.62 $2,067.62 Add to shopping cart
Available to order:
Usually ships
within 8 days
#2 16-815214 STUD (8 required per assembly)
STUD 16-815214  
16-815214OEM Part 16-815214 - Stud (more info) About Mercury Marine $7.38 $7.38 Add to shopping cart
Available to order:
Usually ships
within 8 days
#3 32-815212 HOSE, Manifold To Exhaust Pipe (2 required per assembly)
HOSE 32-815212 32-815212
32-815212OEM Part 32-815212 - Molded Hose (more info) About Mercury Marine $74.09 $74.09 Add to shopping cart
Available to order:
Usually ships
within 8 days
#4 22-815213 FITTING (2 required per assembly)
FITTING           O NLA  
22-815213 FITTING O NLA
(more info)
    UnavailableUnavailable Parts
#5 19-815203 PLUG (2 required per assembly)
PLUG 19-815203  
19-815203OEM Part 19-815203 - Plug (more info) About Mercury Marine $22.72 $22.72 Add to shopping cart
Available to order:
Usually ships
within 8 days
#6 19-815205 FREEZE PLUG (1.00 Inch) (10 required per assembly)
PLUG              O NLA  
19-815205 PLUG O NLA
(more info)
    UnavailableUnavailable Parts
#7 19-815204 FREEZE PLUG (.750 Inch) (4 required per assembly)
PLUG 19-815204  
19-815204OEM Part 19-815204 - Plug (more info) About Mercury Marine $10.00 $10.00 Add to shopping cart
10+ in stock. Explain stock levels
#8 22-815208 FITTING, Tee (4 required per assembly)
FITTING           O NLA  
22-815208 FITTING O NLA
(more info)
    UnavailableUnavailable Parts
#9 22-815210 FITTING, Tee (2 required per assembly)
FITTING           O NLA  
22-815210 FITTING O NLA
(more info)
    UnavailableUnavailable Parts
#11 22-815209 FITTING, Tee (2 required per assembly)
FITTING           O NLA  
22-815209 FITTING O NLA
(more info)
    UnavailableUnavailable Parts
#12 19-815211 PLUG, Pipe Drain (2 required per assembly)
PLUG              O NLA  
19-815211 PLUG O NLA
(more info)
    UnavailableUnavailable Parts
#13 32-815215 HOSE (3.500 Inches) (6 required per assembly)
HOSE 32-815215 32-815215
32-815215OEM Part 32-815215 - Hose (more info) About Mercury Marine $10.37 $10.37 Add to shopping cart
Available to order:
Usually ships
within 8 days
#14 54-815207 CLAMP (16 required per assembly)
CLAMP 54-815207  
54-815207OEM Part 54-815207 - Clamp (more info) About Mercury Marine $10.73 $10.73 Add to shopping cart
Available to order:
Usually ships
within 8 days
#15 27-46820 GASKET, Exhaust Manifold (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
#16 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
#17 12-49112 WASHER (8 required per assembly)
WASHER 12-49112  
12-49112OEM Part 12-49112 - Washer (more info) About Mercury Marine $1.35 $1.35 Add to shopping cart
3 in stock. Explain stock levels
#18 11-68411 NUT, (.375-16) (8 required per assembly)
NUT @5            O - Replaced by 11-826709 12  
11-68411This part has been superseded. NUT @5 O - Replaced by 11-826709 12
(more info)
    UnavailableUnavailable Parts
NUT (.375-16) Sta 11-826709 12  
11-826709 12OEM Part 11-826709 12 - Nut - Priced Individually (more info) About Mercury Marine $4.60 $4.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#19 42-814902A 2 ELBOW KIT, Exhaust (2 required per assembly) Standard
TAIL PIPE         O - Replaced by 42-818608A 1  
42-814902A 2This part has been superseded. TAIL PIPE O - Replaced by 42-818608A 1
(more info)
    UnavailableUnavailable Parts
TAIL PIPE         O NLA  
42-818608A 1 TAIL PIPE O NLA
(more info)
    UnavailableUnavailable Parts
#19 42-818609A 1 ELBOW KIT, Exhaust (OPT required per assembly) (3.00 Inches)
TAIL PIPE         O NLA  
42-818609A 1 TAIL PIPE O NLA
(more info)
    UnavailableUnavailable Parts
#19 42-818610A 1 ELBOW KIT, Exhaust (OPT required per assembly) (6.00 Inches)
TAIL PIPE         O NLA  
42-818610A 1 TAIL PIPE O NLA
(more info)
    UnavailableUnavailable Parts
#20 27-848147 GASKET, Exhaust Elbow (2 required per assembly)
GASKET 27-848147 27-848147
27-848147OEM Part 27-848147 - Gasket (more info) About Mercury Marine $27.56 $27.56 Add to shopping cart
Available to order:
Usually ships
within 8 days
#21 10-815166 SCREW, (.375-16 x 5.625) (8 required per assembly)
SCREW             O NLA  
10-815166 SCREW O NLA
(more info)
    UnavailableUnavailable Parts
#21 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
10+ in stock. Explain stock levels
#22 12-20553 WASHER, (.406 x .734 x .063) (12 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
#23 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
#- 27-13218A 1 GASKET SET (1 required per assembly)
GASKET SET        O NLA  
27-13218A 1 GASKET SET O NLA
(more info)
    UnavailableUnavailable Parts