FREE SHIPPING OVER $99

BEST PRICE GUARANTEED

EARN POWERBOAT REWARDS

SUPPORT M-F 9-5 EST: 856-232-6969

  • Sierra MerCruiser Big Block V8 Exhaust Manifold 7.4 454 502 807078t10 807078t08 18-19571 18-1957-2
Marine parts, fast fulfillment, real support
Get the right part without slowing down your season. PowerBoatSupply helps boat owners order with confidence, backed by trusted marine parts expertise and responsive support.
✓ Fast shipping ✓ Fitment help ✓ Secure checkout

Sierra MerCruiser Big Block V8 Exhaust Manifold 7.4 454 502 807078t10 807078t08 18-19571 18-1957-2

Marine parts, fast fulfillment, real support
Get the right part without slowing down your season. PowerBoatSupply helps boat owners order with confidence, backed by trusted marine parts expertise and responsive support.
✓ Fast shipping ✓ Fitment help ✓ Secure checkout
Brand:
Part Number:
47-19572
$410.09 $309.99
— You save $100.10
Earn $9.30 in PBS Store Credit
Availability: In Stock - Ships same or next business day. Shipping: Free Shipping Over $99


Get back on the water faster — ships next business day.
Trusted by boat owners & marine techs
Real OEM parts, fast shipping, and support from a Mercury Platinum Dealer.
✓ Best Price ✓ Fast Fulfillment ✓ Trusted Fitment ✓ Real Support
✓ 17,500+ verified 5-star reviews

Description

Sierra Replacement Manifold Kit for MerCruiser Big Block V8 454 / 502 Engines 18-1957-2

Comparable Part Numbers:
 • Osco: 9011A
 • GLM: 51240
 • MerCruiser: 89011A8 , 807078T08 , 807078T10 , 89011
 • Barr marine: MC-1-89011

Kit Contains:
 • 1x Exhaust Manifold
 • 1x Hose Fitting with Drain plug
 • 1x Mounting Package
 • 1x Manifold to Riser/Elbow Gasket
 • 1x Manifold to Head Gasket

View AllClose

Specs

UPC:
47-19572
MPN:
18-19571

Reviews

View AllClose