This Part has options, please click the button below to order.
525-454 Mercruiser OEM V8 BBC 454/7.4L and 502/8.2L Exhaust Manifold and Riser Kit w/out Spacer
Qty |
Description |
OEM # |
2 |
Exhaust Elbow |
807988Q03 |
2 |
Exhaust Manifold Assy. (with drain plug) |
807078T08 |
2 |
Gasket-Elbow |
27-863724 (2 Slot, Restricted) or 27-863726 (4 Slot, Full Flow), or 27-863725-1 (Block Off, For Closed Cooling) |
2 |
Gasket-Manifold |
27-46820 |
- Direct OEM Manufactured Replacement for Mercruiser Big Block Chevy 454/502 Manifolds and Risers
- Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
- Replaces Mercruiser #807078T08 and 89011A8 Manifolds
- Replaces Mercruiser #807988Q03, 807988A03 and 44354A3 Risers
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This Part has options, please click the button below to order.
525-4543 Mercruiser OEM V8 BBC 454/7.4L and 502/8.2L Exhaust Manifold and Riser Kit w/ 3" Spacer
Qty |
Description |
OEM # |
2 |
Exhaust Elbow |
807988Q03 |
2 |
Exhaust Manifold Assy. (with drain plug) |
807078T08 |
1 |
3" Spacer Kit with Elbow Gaskets |
93320A13 |
2 |
Gasket-Manifold |
27-46820 |
- Direct OEM Manufactured Replacement for Mercruiser Big Block Chevy 454/502 Manifolds and Risers
- Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
- Replaces Mercruiser #807078T08 and 89011A8 Manifolds
- Replaces Mercruiser #807988Q03, 807988A03 and 44354A3 Risers
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This Part has options, please click the button below to order.
525-4546 Mercruiser OEM V8 BBC 454/7.4L and 502/8.2L Exhaust Manifold and Riser Kit w/ 6" Spacer
Qty |
Description |
OEM # |
2 |
Exhaust Elbow |
807988Q03 |
2 |
Exhaust Manifold Assy. (with drain plug) |
807078T08 |
1 |
6" Spacer Kit with Elbow Gaskets |
93322A12 |
2 |
Gasket-Manifold |
27-46820 |
- Direct OEM Manufactured Replacement for Mercruiser Big Block Chevy 454/502 Manifolds and Risers
- Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
- Replaces Mercruiser #807078T08 and 89011A8 Manifolds
- Replaces Mercruiser #807988Q03, 807988A03 and 44354A3 Risers
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This Part has options, please click the button below to order.
700-58242 Mercruiser GM V8 BBC 454/7.4L and 502/8.2L Raw/Fresh Water Cooling System w/out Spacer
Qty |
Description |
OEM # |
2 |
Exhaust Elbow |
807988A2 |
2 |
Exhaust Manifold Assy. |
807078A6 |
2 |
Gasket-Elbow |
27-863724 |
2 |
Gasket-Manifold |
27-46820 |
8 |
Screw-Steel-Zinc Placted |
10-43749 |
2 |
Hose Fitting w/ Drain Plug Kit |
22-806926A1 |
- Direct Replacement for Mercruiser Big Block Chevy 454/502 Manifolds and Risers
- Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
- Individual Runners for Improved Performance over Stock Manifolds
- Replaces Mercruiser #807078T10 and 89011A8 Manifolds
- Replaces Mercruiser #807988A03 and 44354A3 Risers
- Includes Bolts and Gaskets
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700-58244 Stock Mercury Replacement BBC 454/7.4L and 502/8.1L Cast Iron Exhaust Kit w/ 3” Spacer
Mercury Big Block Chevy Exhaust kit with 3 Inch Spacer. This kit has 4 Inch Elbow Kit used with 4" exhaust hose. For 1981 & Up.
Qty |
Description |
OEM # |
2 |
Exhaust Elbow |
807988A2 |
2 |
Exhaust Manifold Assy. |
807078A6 |
2 |
Spacer 3" |
807476A3 |
2 |
Gasket-Fresh Water |
27-860231 |
2 |
Gasket-Raw Water |
27-863724 |
2 |
Gasket |
27-863726 |
2 |
Gasket |
27-46820 |
8 |
Flange Serrated Nut |
11-49836 |
8 |
Stud (3/8" x 9-1/2") |
16-11375 |
2 |
Hose Fitting w/ Drain Plug Kit |
22-806926A1 |
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700-58246 Stock Mercury Replacement BBC 454/7.4L and 502/8.1L Cast Iron Exhaust Kit w/ 6” Spacer
Mercury Big Block Chevy Exhaust Kit with 6 Inch Spacer. This kit has 3 Inch Elbow Kit used with 4" exhaust hose. For 1981 & Up.
Qty |
Description |
OEM # |
2 |
Exhaust Elbow |
807988A2 |
2 |
Exhaust Manifold Assy. |
807078A6 |
2 |
Spacer 6" |
807477A2 |
2 |
Gasket-Fresh Water |
27-860231 |
2 |
Gasket-Raw Water |
27-863724 |
2 |
Gasket |
27-863726 |
2 |
Gasket |
27-46820 |
8 |
Screw |
10-12244 |
8 |
Screw |
10-43749 |
2 |
Hose Fitting w/ Drain Plug Kit |
22-806926A1 |
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This Part has options, please click the button below to order.
700-58241 Mercury Replacement Big Block Chevy 454/7.4L and 502/8.2L (Cast Iron) 3" Exhaust Kit
Qty |
Description |
OEM # |
2 |
Exhaust Elbow |
98504A3 |
2 |
Exhaust Manifold Assy. |
807078A6 |
2 |
Gasket-Elbow |
27-863724 |
2 |
Gasket-Manifold |
27-46820 |
8 |
Flange Serrated Nut |
11-49838 |
8 |
Stud (Steel) |
16-49545 |
2 |
Hose Fitting w/ Drain Plug Kit |
22-806926A1 |
- Direct Replacement for Mercruiser Big Block Chevy 454/502 Manifolds and Risers
- Manifolds and 3" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
- Riser has 15° down angle mounts with studs and nuts 1983-1995 Mercruiser V6, V8 engines with the center rise manifolds, uses 3" hose or bellows
- Individual Runners for Improved Performance over Stock Manifolds
- Replaces Mercruiser #807078T10 and 89011A8 Manifolds
- Replaces Mercruiser #98504A3 Risers
- Includes Bolts and Gaskets
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700-58243 Stock Mercury Replacement BBC 454/7.4L and 502/8.1L Cast Iron Exhaust Kit w/ 3” Spacer
Mercury Big Block Chevy Exhaust Kit with 3 Inch Spacer. This kit has 3 Inch Elbow Kit used with 3" exhaust hose. For 1981 & Up.
Qty |
Description |
OEM # |
2 |
Exhaust Elbow |
98504A3 |
2 |
Exhaust Manifold Assy. |
807078A6 |
2 |
Spacer 3" |
807476A3 |
2 |
Gasket-Elbow |
27-863724 |
2 |
Gasket-Elbow |
27-863726 |
2 |
Gasket-Manifold |
27-46820 |
8 |
Flange Serrated Nut |
11-49838 |
8 |
Stud |
16-97520 |
2 |
Hose Fitting w/ Drain Plug Kit |
22-806926A1 |
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This Part has options, please click the button below to order.
700-58245 Stock Mercury Replacement BBC 454/7.4L and 502/8.1L Cast Iron Exhaust Kit w/ 6” Spacer
Mercury Big Block Chevy Exhaust Kit with 6 Inch Spacer. This kit has 3 Inch Elbow Kit used with 3" exhaust hose. For 1981 & Up.
Qty |
Description |
OEM # |
2 |
Exhaust Elbow |
98504A3 |
2 |
Exhaust Manifold Assy. |
807078A6 |
2 |
Spacer 6" |
807477A2 |
2 |
Gasket-Elbow |
27-863724 |
2 |
Gasket-Elbow |
27-863726 |
2 |
Gasket-Manifold |
27-46820 |
16 |
Screw |
10-12244 |
2 |
Hose Fitting w/ Drain Plug Kit |
22-806926A1 |
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This Part has options, please click the button below to order.
700-51240 Mercruiser Big Block Chevy Exhaust Manifold Kit 454/502 89011A8 / 807078T08
Qty |
Description |
OEM # |
1 |
Exhaust Manifold |
807078T08 |
1 |
Hose Fitting w/ Drain Plug |
22-806926A1 |
1 |
Gasket-Elbow |
27-863724 |
1 |
Gasket-Manifold |
27-46820 |
- Direct Replacement for Mercruiser Big Block Chevy 454/502 Manifold
- Manifold Constructed from Cast Iron and painted with black corrosion resistant paint.
- Individual Runners for Improved Performance over Stock Manifold
- Replaces Mercruiser #807078T10, 80707T08 and 89011A8, 807078A6 Manifolds.
- Can use with 4" or 3" Riser
- Includes Gaskets
- 3-Year Warranty
- Sold Each.
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