Need Help? 905-428-8983

  • Your cart is currently empty

Why create an account?

  • Store vehicles in your garage.
  • Get product recommendations.
  • Easily find parts & accessories.

Why create an account?

  • Store vehicles in your garage.
  • Get product recommendations.
  • Easily find parts & accessories.
Your cart is currently empty

My Cart

View Cart Checkout
  • SKU: 704903

Sierra Exhaust Manifold 18-1957-1 Fits Mercury

$476.99 MSRP Price $529.99

Save 10% Off MSRP

Low Stock

At Distributor - Ships in 2- 4 business days.

View Shipping Policy
Add to Compare Add to Wish List
  • Privacy Guaranteed
  • Secure Payment
  • Amex
  • Mastercard
  • PayPal
  • Visa
  • Sezzle
Prices are in Canadian Dollars. In the case of a discrepancy between the store and online, the store info will prevail.

Product Details

Port & Starboard
Replaces: 89011A8, 807078A6
454 Engine Cubic Inches
Fits most Mercruiser (GM) V-8 big blocks with center riser
Use with:
Exhaust Manifold Gasket: 18-0418
Mounting Kit: 18-8532