Mercruiser OEM Factory Exhaust Systems - OEM Mercruiser 454 / 502, 7.4L Big Block Chevy

Mercruiser OEM V8 BBC 454/7.4L and 502/8.2L Exhaust Manifold and Riser Kit w/out Spacer

• 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

Mercruiser OEM V8 BBC 454/7.4L and 502/8.2L Exhaust Manifold and Riser Kit w/ 3" Spacer

• 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

Mercruiser OEM V8 BBC 454/7.4L and 502/8.2L Exhaust Manifold and Riser Kit w/ 6" Spacer

• 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

• For select MerCruiser stern drive and inboard engines.
• E-coated for corrosion protection on internal coolant passages and exterior finish. For use in freshwater installations.
• Gasket is included with the manifold.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

Exhaust manifold 807078T08 is for use on the port or starboard (left or right) side of V-8 MerCruiser engines made by General Motors. It fits 454 or 502 cid engines (model year 1981 thru 2002) . Gasket included with the manifold. For freshwater installations.

• Replacement exhaust elbow with 4" outside diameter and seven degree down angle
• Hot dipped and top coated to prevent corrosion. Recommended for use in freshwater or saltwater installations.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

• Replacement exhaust elbow with 4" outside diameter and seven degree down angle
• E-coated to prevent corrosion. Recommended for use in freshwater installations.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

Exhaust elbow 807988Q03 is for use on V-6 and V-8 MerCruiser stern drive or inboard engines made by General Motors having a center rise outlet exhaust manifold (model year 2002 and older). It has a 4" outside diameter and a seven degree down angle outlet. For corrosion protection it is E-coated black for freshwater only installations.

Mercruiser 3" Riser Extension Kit 93320A15

Supercedes: 93320A10

Mercruiser 3" Riser Kit 93320A13

Supercedes: 93320A2, 93320A3, 807476A6, 93320A5, 93320A13

Mercruiser 6" Riser Extension Kit 93322A10

Fits:
2001‑2002 MCM 4.3L MPI (s/n 0M300000‑0M614999)
2001‑2002 MCM V‑8 (305, 350 & 377 cid) MPI engines (s/n 0M300000‑0M599999)
2001‑2002 MIE & Tow Sports V‑8 (350 & 377 cid) MPI engines (s/n 0M300000‑0M316999)

Mercruiser 6" Riser Kit 93322A12

6 in. (152 mm)

Fits: MCM V‑6 carb & TBI engines with 2 piece exhaust manifolds (s/n 0M614999 & below)
MCM/MIE/Tow Sports V‑8 (305, 350, 377, 454 & 502 cid) engines with cast iron elbows (s/n 0M299999 & below)
MCM V‑8 (305 & 350 cid) carb engines (s/n 0M300000‑0M599999)
MIE & Tow Sports carb engines (s/n 0M300000‑0M316999)

Supercedes: 93322A2, 93322A3, 93322A4, 93322A6, 93322A7, 93322A7

GASKET Mercruiser 27-863726

Supersedes: 27-871051
27-818832
27-87105
27-860232
27-871051

GASKET Mercruiser 27-863724Q

GASKET Mercruiser 27-8637251

Supersedes: 27-41811
27-860231
27-863725