FINAL DAYS for Labor Day Sale Savings! Upgrade to 2nd Day Air for only $2 more*

Mercruiser Exhaust Manifolds

Refine Parts List
Model

(2.5 to 898)
Serial Number

Model

Serial Number

Manifold

Manifold

Manifold Gasket

1201666601 - 2046624--18-2896
1202046625 - 2324346--18-2896
1202324347 - 3377340--18-2896
1203377341 - 5192408--18-2896
1205192049 - 6229717--18-2896
120/2.5L6229718 & up18-1956-1 -18-1204
140(4Cyl)2508261 - 333213718-1955-1-18-1203
140(4Cyl)3332138 - 515766818-1955-1-18-1203
140(4Cyl)5157669 - 622971718-1955-1-18-1203
140/3.0L6229718 & up18-1956-1 -18-1204
3.0L/3.0LXC856559 - F60399918-1956-1 -18-1204
140(6Cyl)1538930 - 1725960--18-2830
1501666495 - 2048046--18-2830
1602048022 - 2770031--18-2830
1652770032 & up18-1960-1-18-2830
165/170/[3.7]L6916779 & up---
180/190/[3.7]LX6916779 & up---
175/4.3L (262 CID)B527955 & up18-1952-1 T-20952 18-2909
175/4.3L (262 CID)B527955 & up18-1952-1 T-20952 18-2909
4.3L (GEN II)D714107 & up18-1952-1 T-20952 18-2909
4.3L (GEN II)D714107 & up18-1952-1 T-20952 18-2909
4.3L (GEN II)F000878 & up18-1952-1 T-20952 18-2909
4.3L (GEN II)F000878 & up18-1952-1 T-20952 18-2909
185 (229 CID)6330183 & up18-1952-1 T-20952 18-2909
185 (229 CID)6330183 & up18-1952-1 T-20952 18-2909
185 (262 CID)A331455 & up18-1952-1 T-20952 18-2909
185 (262 CID)A331455 & up18-1952-1 T-20952 18-2909
2002453769 - 271207218-1960-1-18-2830
200-GM6218462 & up18-1953-2 T-20953 18-0872
200-GM6218462 & up18-1953-2 T-20953 18-0872
200/5.0L(GM)B525982 & up18-1953-2 T-20953 18-0872
200/5.0L(GM)B525982 & up18-1953-2 T-20953 18-0872
205 (262 CID)A331455 & up18-1952-1 T-20952 18-2909
205 (262 CID)A331455 & up18-1952-1 T-20952 18-2909
205/4.3L-LXB527955 & up18-1952-1 T-20952 18-2909
205/4.3L-LXB527955 & up18-1952-1 T-20952 18-2909
4.3LX(GEN II)D714370 & up18-1952-1 T-20952 18-2909
4.3LX(GEN II)D714370 & up18-1952-1 T-20952 18-2909
4.3LX(GEN II)F001220 & up18-1952-1 T-20952 18-2909
4.3LX(GEN II)F001220 & up18-1952-1 T-20952 18-2909
215-FORD2781153 & up18-1962-18-0183
215-FORD2781153 & up18-1958-18-0183
225-FORD3385721 & up18-1962-18-0183
225-FORD3385721 & up18-1958-18-0183
225-S (FORD)3385721 & up18-1962-18-0183
225-S (FORD)3385721 & up18-1958-18-0183
225-GM1539620 - 2278646--18-0872
225-GM1539620 - 2278646N/A-18-0872
225-GM2278647 - 2694014--18-0872
228-GM4765100 - 4888929--18-0872
228-GM4888930 - 517000818-1951-1 T-20951 18-0872
228-GM4888930 - 517000818-1950-1 T-2095018-0872
228-GM5170009 - 621846118-1951-1 T-20951 18-0872
228-GM5170009 - 621846118-1950-1 T-2095018-0872
228-GM6218462 & up18-1953-2 T-20953 18-0872
228-GM6218462 & up18-1953-2 T-20953 18-0872
230-GM (IMBRD)5907058 & up18-1953-2 T-20953 18-0872
230-GM (IMBRD)5907058 & up18-1953-2 T-20953 18-0872
230/5.0 GM (IB)B522506 & up18-1953-2 T-20953 18-0872
230/5.0 GM (IB)B522506 & up18-1953-2 T-20953 18-0872
230-GM6218462 & up18-1953-2 T-20953 18-0872
230-GM6218462 & up18-1953-2 T-20953 18-0872
230/5.0L-LX (GM)B525982 & up18-1953-2 T-20953 18-0872
230/5.0L-LX (GM)B525982 & up18-1953-2 T-20953 18-0872
233-FORD4173000 & up18-1962-18-0183
233-FORD4173000 & up18-1958-18-0183
250-GM2314301 - 2639854--18-0872
250-GM4768860 - 490884918-1951-1 T-20951 18-0872
250-GM4768860 - 490884918-1950-1 T-2095018-0872
255-FORD3258728 & up18-1962-18-0183
255-FORD3258728 & up18-1958-18-0183
255-GM4175500 - 4499060--18-0872
255-GM4499061 - 519590818-1951-1 T-20951 18-0872
255-GM4499061 - 519590818-1950-1 T-2095018-0872
255-GM5195909 & up18-1951-1 T-20951 18-0872
255-GM5195909 & up18-1950-1 T-2095018-0872
260-GM4908850 - 621846118-1951-1 T-20951 18-0872
260-GM4908850 - 621846118-1950-1 T-2095018-0872
260-GM6218462 & up18-1953-2 T-20953 18-0872
260-GM6218462 & up18-1953-2 T-20953 18-0872
260/5.7L (GM)B525982 & up18-1953-2 T-20953 18-0872
260/5.7L (GM)B525982 & up18-1953-2 T-20953 18-0872
260-GM (INBRD)5907058 & up18-1953-2 T-20953 18-0872
260-GM (INBRD)5907058 & up18-1953-2 T-20953 18-0872
260/5.7 GM (IB)B588506 & up18-1953-2 T-20953 18-0872
260/5.7 GM (IB)B588506 & up18-1953-2 T-20953 18-0872
270-GM2851074 - 3077735--18-0872
280-GM4176250 & up--18-0872
300MR/TRS (GM)6668677 & up18-1953-2 T-20953 18-0872
300MR/TRS (GM)6668677 & up18-1953-2 T-20953 18-0872
320-GM (EFI)A543604 & up18-1953-2 T-20953 18-0872
320-GM (EFI)A543604 & up18-1953-2 T-20953 18-0872
320-GM (EFI)B157603 & up18-1953-2 T-20953 18-0872
320-GM (EFI)B157603 & up18-1953-2 T-20953 18-0872
325-GM2313965 - 3042730--18-0418
325-GM3042731 & up--18-0418
330-GM4623115 & up--18-0418
330-GM/6083145 & up--18-0418
340/7.4L-GM5889914 & up--18-0418
340/7.4L-GM5889914 & up--18-0418
350-GM3780450 & up--18-0418
350-GM (Mag)A635178 & up18-1953-2 T-20953 18-0872
350-GM (Mag)A635178 & up18-1953-2 T-20953 18-0872
350-GM (Mag)B525982 & up18-1953-2 T-20953 18-0872
350-GM (Mag)B525982 & up18-1953-2 T-20953 18-0872
350 (Mag-Trn.Ski)D505450 & up18-1953-2 T-20953 18-0872
350 (Mag-Trn.Ski)D505450 & up18-1953-2 T-20953 18-0872
370 TRS-GM4179554 & up--18-0418
370 TRS-GM6721528 & up18-1957-1 T-20957 18-0418
370 TRS-GM6721528 & up18-1957-1 T-20957 18-0418
390-GM2781129 - 2825059--18-0418
400 TRS-GM4179554 & up--18-0418
420-GMA398941 & up--18-0418
425-GMA398941 & up--18-0418
440 TRS-GM4179554 & up--18-0418
454-GM (Mag)A631894 & up18-1957-1 T-20957 18-0418
454-GM (Mag)A631894 & up18-1957-1 T-20957 18-0418
454 Mag Bravo (GM)B721206 & up18-1957-1 T-20957 18-0418
454 Mag Bravo (GM)B721206 & up18-1957-1 T-20957 18-0418
454 Mag Bravo (Gen V)D805069 & up18-1957-1 T-20957 18-0418
454 Mag Bravo (Gen V)D805069 & up18-1957-1 T-20957 18-0418
460 TRS-GM4179554 & up--18-0418
465C849992 & up--18-0418
4704208730 - 5520114---
4704208730 - 5520114---
4705520115 - 6218036---
500C577254 & up--18-0418
502 Mag Bravo (GM)C878221 & up18-1957-1 T-20957 18-0418
502 Mag Bravo (GM)C878221 & up18-1957-1 T-20957 18-0418
502 Mag Bravo (Gen V)D824589 & up18-1957-1 T-20957 18-0418
502 Mag Bravo (Gen V)D824589 & up18-1957-1 T-20957 18-0418
502 EFID840650 & up18-1957-1 T-20957 18-0418
502 EFID840650 & up18-1957-1 T-20957 18-0418
525D456000 & up--18-0418
888-FORD3108723 & up18-1958-18-0183
888-FORD3108723 & up18-1962-18-0183
898/198-GM4762210 - 621846118-1950-1 T-2095018-0872
898/198-GM4762210 - 621846118-1950-1 T-2095018-0872
898-GM6218462 & up18-1953-2 T-20953 18-0872
898-GM6218462 & up18-1953-2 T-20953 18-0872
5.7-GM (Ski)A338553 & up18-1953-2 T-20953 18-0872
5.7-GM (Ski)A338553 & up18-1953-2 T-20953 18-0872
5.7-GM (Ski)B514627 & up18-1953-1-18-0872
5.7-GM (Ski)B514627 & up18-1953-2 T-20953 18-0872
5.7-GM (Ski)B525982 & up18-1953-1-18-0872
5.7-GM (Ski)B525982 & up18-1953-2 T-20953 18-0872
7.4L Bravo (GM)B771113 & up18-1957-1 T-20957 18-0418
7.4L Bravo (GM)B771113 & up18-1957-1 T-20957 18-0418
7.4L Mag Bravo (Gen V)D603118 & up18-1957-1 T-20957 18-0418
7.4L Mag Bravo (Gen V)D603118 & up18-1957-1 T-20957 18-0418
7.4L w/Hurth (IB)ALL18-1957-1 T-20957 18-0418
7.4L w/Hurth (IB)ALL18-1957-1 T-20957 18-0418
7.4L (IB/LHR/Gen V)D715494 & up18-1957-1 T-20957 18-0418
7.4L (IB/LHR/Gen V)D715494 & up18-1957-1 T-20957 18-0418
8.2L w/Hurth (IB)C878221 & up18-1957-1 T-20957 18-0418
8.2L w/Hurth (IB)C878221 & up18-1957-1 T-20957 18-0418
8.2L (IB) (Gen V)*D857200 & up18-1957-1 T-20957 18-0418
8.2L (IB) (Gen V)*D857200 & up18-1957-1 T-20957 18-0418

Model

Serial Number

Manifold

Manifold

Manifold Gasket

Refine Parts List
Model

(2.5 to 898)
Serial Number

Blowout
Save 35%-36% Off.
Your Price: $341.05
Save: $74.25
(17% Off $415.30)
Part # 18-1950-1
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • MERCURY MARINE 77234A2
Port Side
Fits most Mercuiser (GM) small blocks with end riser, (V8) 305-350 cu.in. Models 198, 228, & 898
Supplied with Mounting Package
Use with:
    Exhaust Manifold Gasket: 18-2949
    Mounting Kit: 18-8548
Your Price: $258.74
Save: $160.45
(38% Off $419.19)
Part # 18-1951-1
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
Hurry! Only 1 left in stock
Replaces OEM part #
  • MERCURY MARINE 77235A 8
  • MERCURY MARINE 77235A2
Starboard Side
Fits most Mercuiser (GM)small blocks with end riser, (V8) 305-350 cu.in. models 198, 228, & 898.
Supplied with Mounting Package
Use with:
    Exhaust Manifold Gasket: 18-2949
    Mounting Kit: 18-8548
Your Price: $176.98
Save: $105.29
(37% Off $282.27)
Part # 18-1952-1
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
Replaces OEM part #
  • MERCURY MARINE 99746A17
  • MERCURY MARINE 99746A8
Fits most 4.3L (229 & 262 CID) V-6 applications, Models 185 & 205, fits Port or Starboard
Supplied with Mounting Package
Use with:
    Mounting Kit: 18-8533
    Manifold Gasket: 18-2909
Your Price: $138.16
Save: $91.91
(39% Off $230.07)
Part # 18-1953-2
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
Replaces OEM part #
  • MERCURY MARINE 860246A10
  • MERCURY MARINE 87114A19
Will fit either side - Fits most Mercruiser(GM) small blocks with center riser, Port & Starboard
Supplied with Mounting Package
Supplied with gaskets
Use with:
    Mounting Kit: 18-8520
Your Price: $429.14
Save: $44.06
(9% Off $473.20)
Part # 18-1954-1
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
Hurry! Only 1 left in stock
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • MERCURY MARINE 95862A5
Fits most late Model 2.5L 153 CID & 3.0L 181 CID with Rochester Carb w/ electrical choke, 5 BOLT PATTERN (1983-89)
Supplied with Mounting Package
Use with:
    Exhaust Manifold Gasket: 18-1204
    End Plate: 18-4009
Mounting Hardware: 18-8549
Your Price: $340.98 (Out of stock)
Save: $73.02
(17% Off $414.00)
Part # 18-1955-1
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • MERCURY MARINE 96705A1
Fits most early Model 3.0L 181 CID with Rochester Carb. 5 bolt pattern and 2.5L, 153CID (1968-82) Port & Starboard, New Style
Supplied with Mounting Package
Use with:
    Exhaust Manifold Gasket: 18-1203
    End Plate: 18-4009
Your Price: $308.98
Save: $153.63
(33% Off $462.61)
Part # 18-1956-1
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
Replaces OEM part #
  • MERCURY MARINE 806867A 8
  • MERCURY MARINE 99798A18
Fits most late Model 2.5L 153 CID and 3.0L 181 CID, Model 140 & 3.0 with MerCarb 5 bolt pattern with electric choke (1983-95), Port & Starboard
Supplied with Mounting Package
Use with:
    Exhaust Manifold Gasket: 18-1204
    End Plate: 18-4009
Your Price: $176.81
Save: $92.19
(34% Off $269.00)
Part # 18-1957-1
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • MERCURY MARINE 807078A 6
  • MERCURY MARINE 89011A8
Fits most Mercruiser (GM) V-8 big blocks with center riser, 454 cu.in. Models 330, 340 & 7.4L, Port & Starboard
WILL FIT EITHER SIDE
Use with:
    Exhaust Manifold Gasket: 18-0418
    Mounting Kit: 18-8532
Your Price: $317.75
Save: $119.06
(27% Off $436.81)
Part # 18-1958-1
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
Hurry! Only 1 left in stock
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • MERCURY MARINE 65604A12
  • MERCURY MARINE 65604A4
Fits most Mercruiser Small block (Ford) (V-8) 302-351 cu.in. Models 215, 225, 233, 255 & 888, PORT SIDE ONLY
Supplied with Mounting Package
Use with:
    Mounting Kit: 18-8509
Use with Manifold Gasket: 18-0183
Your Price: $617.25 (Out of stock)
Save: $305.56
(33% Off $922.81)
Part # 18-1960-1
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • MERCURY MARINE 58759A10
  • MERCURY MARINE 58759A14
Fits most Mercruiser (GM) Inline 6 Cyl. Engines 250 & 292 cu.in.Models 165 & 200, Port & Starboard
Supplied with Mounting Package
Use with:
    Mounting Kit: 18-8531
    Manifold Gasket 18-2830

Your Price: $308.23 (Out of stock)
Save: $112.07
(26% Off $420.30)
Part # 18-1962-1
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • MERCURY MARINE 65603A12
  • MERCURY MARINE 65603A4
Fits most Mercruiser Engines (Ford) small block (V-8) 302-351 cu.in. Models 215, 225, 233, 255 & 888, STARBOARD SIDE ONLY
Supplied with Mounting Package
Use with:
    Mounting Kit: 18-8509
    Manifold Gasket: 18-0193
Your Price: $1745.19
Save: $103.81
(5% Off $1849.00)
Part # 18-1987-1
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
No Reviews  |  Write Review  |  Ask Question
  • Not for use on engines with high mounted power steering pumps
  • Kit includes:
  • (2) center rise manifolds, (2) exhaust elbows, (1) thermostat housing, 1 thermostat cover, (1) thermostat, all hoses, hardware, gaskets plus complete instructions to do the job right.
  • This manifold kit is designed to convert all Mercruiser stern drive engines with GM 305 & 350 CID blocks that have log style exhaust manifolds and raw water cooling to the newer more efficient center rise manifolds.
  • This Manifold Kit is designed to convert all Mercruiser Stern Drive Engines with GM 305 & 350 CID Blocks that have Log Style Exhaust Manifolds and Raw Water Cooling to the Newer More Efficient Center Rise Manifolds
Your Price: $284.99 Discontinued
Save: $74.43
(20% Off $359.42)
Part # 9-40508
No Reviews  |  Write Review  |  Ask Question
Manifold
Dry joint style fits 5.0L MPI, 5.7L MPI
350 Mag & 6.2L Mag
OEM # 865735A02
Your Price: $212.99
Save: $46.21
(17% Off $259.20)
Part # 9-40505
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
No Reviews  |  Write Review  |  Ask Question
Manifold
Fits both sides of 229 and 262 CID V-6 engines
Use mounting kit 9-40576
OEM 99745, 99746
Fall Sale Price: $270.04
Save: $149.15
(35% Off $419.19)
Part # 9-40504
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
Hurry! Only 1 left in stock
No Reviews  |  Write Review  |  Ask Question
Manifold, Starboard - Log style manifold fits 305 - 350 CID V-8 - Use 9-40573 mounting kit
Replaces OEM part #: 77235B, 77235A8
Your Price: $310.99
Save: $103.01
(24% Off $414.00)
Part # 9-40503
No Reviews  |  Write Review  |  Ask Question
Manifold, Port - Log style manifold fits 305 - 350 CID V-8 - Use 9-40573 mounting kit
Replaces OEM part #: 77234B, 77234A7
Fall Sale Price: $172.12 (Out of stock)
Save: $96.88
(36% Off $269.00)
Part # 9-40506
No Reviews  |  Write Review  |  Ask Question
Manifold - Fits both sides of 454 CID 7.4L V-8 engines - Use mounting kit 9-40575
Replaces OEM part #: 89011
Fall Sale Price: $273.10
Save: $150.62
(35% Off $423.72)
Part # 9-40502
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
Hurry! Only 1 left in stock
No Reviews  |  Write Review  |  Ask Question
Manifold, Port - Log style manifold fits 302 and 351 CID V-8 - Use mounting kit 9-40572
Replaces OEM part #: 54100, 65604
Your Price: $256.92 (Out of stock)
Save: $157.08
(37% Off $414.00)
Part # T-20950
No Reviews  |  Write Review  |  Ask Question
Replaces:
  • Mercruiser # 77234B
Your Price: $245.61
Save: $173.58
(41% Off $419.19)
Part # T-20951
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
No Reviews  |  Write Review  |  Ask Question
Replaces:
  • Mercruiser # 77235B
Your Price: $167.87
Save: $91.33
(35% Off $259.20)
Part # T-20952
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
No Reviews  |  Write Review  |  Ask Question
Replaces:
  • Mercrusier #'s 99745 and 99746.
Your Price: $147.48
Save: $82.09
(35% Off $229.57)
Part # T-20953
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
No Reviews  |  Write Review  |  Ask Question
Replaces:
  • Mercruiser #'s 87114 and 860246. Updated to replace all small block Mercruiser center riser manifolds to date.
Your Price: $156.70
Save: $112.30
(41% Off $269.00)
Part # T-20957
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
No Reviews  |  Write Review  |  Ask Question
Replaces:
  • Mercruiser # 89011
Your Price: $262.88
Save: $160.84
(37% Off $423.72)
Part # T-20958
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
No Reviews  |  Write Review  |  Ask Question
Replaces:
  • Mercruiser #'s 54100 and 65604.
Your Price: $380.84
Save: $64.33
(14% Off $445.17)
Part # 18-1966
SHIPS TODAY!* if ordered in 10 hrs 3 mins.
No Reviews  |  Write Review  |  Ask Question
Replaces OEM Part #:
  • Mercury 860235A03
Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Starok
by Martin from Jonquiere, Quebec on June 28, 2014
good delivery time
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Starsatisfied customer
by James from Schertz, Texas on March 18, 2011
The eshaust manifold arrived one day before the promised date and the product was as good if not better than to OEM manifold. 100% satisfied.
(9 of 10 people found this review helpful)
Was this review helpful?
Full StarFull StarFull StarFull StarFull Star Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarPerfect fit
by Daniel from Madison, New Jersey on August 08, 2015
Very happy with product and fast delivery.
Was this review helpful?
Full StarFull StarFull StarFull StarFull StarWhere else can you ship your own weight for $20
by Kirby from Bradenton, Florida on July 25, 2015
Sierra is not known as the best, but half the price of everything else. The kicker here was shipping. Twenty dollars for a hundred pounds of cast iron is unheard of. It arrived quickly and packed well, made in USA.
Was this review helpful?
Full StarEmpty StarEmpty StarEmpty StarEmpty Star Based On 1 Review | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty Starmake sure you order the right manifold
by Timothy from Port Townsend, Washington on October 06, 2013
I was happy with this manifold this time. The only problem is make sure you order the right manifold, I ordered the wrong one the first time, the discription said it would fit, I put the side plates on then tried to put the manifold on the head and it did not fit so I sent it back and they said that they will not refund my money because the side plates were installed.
(2 of 2 people found this review helpful)
Was this review helpful?
Ask a question for
Question & Answer Guidelines
This product ships in 1 to 3 business days.
Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
End of Summer Savings During our Huge Fall Boatful of Savings Sale - Stock Up Now & Save!