Mercury Marine
Mercury Marine Thermostat 140-Degrees #59078
Regular price $3949 USDUnit price /UnavailableIn stock (23 units)Mercury Marine
Mercury Marine Thermostat 120-Degree #14586
Sale price $3499 USD Regular price $4235Unit price /UnavailableIn stock (155 units)Sierra
Sale price $4254 USD Regular price $5105Unit price /UnavailableIn stock (52 units)Sierra
Sierra Spring Thermostat #18-5703
Sale price $061 USD Regular price $072Unit price /UnavailableSierra
Sierra Spring Pressure Relief #18-5701
Sale price $051 USD Regular price $060Unit price /UnavailableSierra
Sierra Thermostat Kit #18-3642
Sale price $6005 USD Regular price $7205Unit price /UnavailableLow stock (15 units)Sierra
Sale price $3822 USD Regular price $4586Unit price /UnavailableIn stock (29 units)Sierra
Sierra Yamaha Thermostat #18-3639
Sale price $4260 USD Regular price $5112Unit price /UnavailableIn stock (45 units)Sierra
Sierra Mercury Thermostat #18-3640
Sale price $2637 USD Regular price $3147Unit price /UnavailableLow stock (16 units)Sierra
Sale price $5184 USD Regular price $6221Unit price /UnavailableLow stock (18 units)Sierra
Sierra Mercury Thermostat #18-3638
Sale price $4761 USD Regular price $5713Unit price /UnavailableVery low stock (4 units)Sierra
Sierra Thermostat Yamaha #18-3636
Sale price $5708 USD Regular price $6849Unit price /UnavailableIn stock (25 units)Sierra
Sierra Yamaha Outboard Thermostat #18-3637
Sale price $5679 USD Regular price $6746Unit price /UnavailableLow stock (7 units)Sierra
Sale price $8530 USD Regular price $10589Unit price /UnavailableIn stock (58 units)Sierra
Sierra Mercury Thermostat #18-3633
Sale price $7678 USD Regular price $9531Unit price /UnavailableIn stock (109 units)Sierra
Sale price $4778 USD Regular price $5524Unit price /UnavailableLow stock (20 units)
Frequently Asked Questions
What kind of products do you sell?
What kind of products do you sell?
First Choice Marine is an online marine retailer carrying a diverse line of marine parts and accessories and related items from industry-respected and demanded manufacturers and suppliers. Through our diverse distributor network, we are able to access over 150,000 items, including our current site inventory, new products being added, and special order items. If you need it on your boat... we are your one-stop shop!
Do you offer free shipping?
Do you offer free shipping?
Yes, we offer FREE Shipping on most orders over $149 to US-48*.
Each product displays a shipping status message, just above the item price. Below is the meaning for each of these codes.
- Qualifies for Free Shipping: This item qualifies for free shipping when the order is $149+
- Qualifies for Free Ground Shipping: This item qualifies for free ground shipping when the order is $149+.
- Oversized - Not Qualified for Free Shipping: This item is too large/heavy to qualify for free shipping
- Hazardous Item - Not Qualified for Free Shipping: This item is hazardous and does not qualify for free shipping
- Truck Freight - Not Qualified for Free Shipping: This item has to be shipped via truck freight. Please contact us for a quote
- In-Store Pickup Only: This item can only be picked up in our Grain Valley, MO retail store
How do I know if something is in stock or not in stock?
How do I know if something is in stock or not in stock?
Below the price of the item, on the product page, there is a message indicating the availability of the product.
The quantity on hand is updated as inventory events happen and matches what we have available. If you have urgent needs and we are close to what you need, contact us, and we can confirm stock.
What is your return policy?
What is your return policy?
We offer a hassle-free return policy. If you're not completely satisfied with your purchase, you can return it within 30 days for a full refund or exchange.
If you need to return an item, please follow the guidelines here so we can process a prompt refund and assist you in finding the correct item.