Skip to main content
We may get paid by partner for deals, including promoted items

Menu

Trending
Top Brands Palmetto State ArmoryHot Yeti CoolerDeal NatchezDeal SitkaDeal 5.11Sale Winter Clearance Amazon Pickleball Sale Amazon FitnessHot Stores
Sierra 18-3640 Mercury Thermostat by Sierra Marine -

Product Description

Sierra 18-3640 Mercury Thermostat - Replaces 8M0168892Sierra replacement thermostat for Mercury Marine Outboards.Fits: Mercury 40-60HP (1C050252 & Up)Interchangeable with: Mercury Marine; 8M0117413; 8M0168892;

Sierra 18-3640 Mercury Thermostat

at Wholesale Marine
Browse all Wholesale Marine deals
$24.59
In Stock at Wholesale Marine
Price verified 3d ago
Buy Now at Wholesale Marine
Secure checkout Easy returns
or compare prices
Amazon logo Amazon eBay logo eBay

Product Details

Brand Sierra Marine
Sierra Marine

More from Sierra Marine

Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-3605 Mercury Thermostat Kit Sierra 18-3605 Mercury Thermostat Kit View Details
$84.99
Buy Now · $84.99
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-2915-9 Water Pump Gasket (Priced Per Pkg Of 2) Sierra 18-2915-9 Water Pump Gasket (Priced Per Pkg Of 2) View Details
$5.29
Buy Now · $5.29
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-0835 Thermostat Gasket Sierra 18-0835 Thermostat Gasket View Details
$5.29
Buy Now · $5.29
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-2919-9 Water Pump Gasket (Pkg Of 2) Sierra 18-2919-9 Water Pump Gasket (Pkg Of 2) View Details
$6.59
Buy Now · $6.59
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-2749 Thermostat Cover Gasket Sierra 18-2749 Thermostat Cover Gasket View Details
$5.49
Buy Now · $5.49
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-0339 Thermostat Gasket Sierra 18-0339 Thermostat Gasket View Details
$6.79
Buy Now · $6.79
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-2564-1 Impeller Gasket Sierra 18-2564-1 Impeller Gasket View Details
$13.29
Buy Now · $13.29
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-2007 Oil Seal Replaces 26-94038 Sierra 18-2007 Oil Seal Replaces 26-94038 View Details
$12.19
Buy Now · $12.19
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-3549 Mercury Thermostat Sierra 18-3549 Mercury Thermostat View Details
$22.49
Buy Now · $22.49
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-3553 Mercury 143 Thermostat Sierra 18-3553 Mercury 143 Thermostat View Details
$21.49
Buy Now · $21.49
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-3569 Mercury 70-125HP 2 Cycle Thermostat Kit Sierra 18-3569 Mercury 70-125HP 2 Cycle Thermostat Kit View Details
$25.49
Buy Now · $25.49
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-43052 Thermostat Kit Sierra 18-43052 Thermostat Kit View Details
$41.79
Buy Now · $41.79
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-3638 Mercury Thermostat Sierra 18-3638 Mercury Thermostat View Details
$43.19
Buy Now · $43.19
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-3642 Mercury Thermostat Kit Sierra 18-3642 Mercury Thermostat Kit View Details
$52.49
Buy Now · $52.49
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-3633 Mercury Thermostat Sierra 18-3633 Mercury Thermostat View Details
$71.99
Buy Now · $71.99
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-3635 Mercury Thermostat Sierra 18-3635 Mercury Thermostat View Details
$72.89
Buy Now · $72.89
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-3631 Mercury 135-300 Verado Thermostat With Housing Sierra 18-3631 Mercury 135-300 Verado Thermostat With Housing View Details
$149.49
Buy Now · $149.49
Wholesale Marine
Wholesale Marine
Last Updated:
Oct 11, 2026 07:47 AM
Sierra 18-3606 Mercury 130 Thermostat Kit Sierra 18-3606 Mercury 130 Thermostat Kit View Details
$152.99
Buy Now · $152.99
Wholesale Marine