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Ships within 48 hours · Estimated delivery Jul 21 - Jul 26
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Description
Merchant Automotive 10513 Engine Coolant Thermostat KitGet the Merchant Automotive 10513 Engine Coolant Thermostat Kit from GAP for your GM 6. 6L Duramax today. Replace those failing thermostats and seals with this kit designed to fit 2011 to 2016 Duramax 6. 6L. The front thermostat is mounted in the forward position of the thermostat housing and is identified by its symmetrical shape. It opens at 185 degrees, allowing coolant to flow to the radiator. The rear position thermostat is located toward the
Get the Merchant Automotive 10513 Engine Coolant Thermostat Kit from GAP for your GM 6.6L Duramax today. Replace those failing thermostats and seals with this kit designed to fit 2011 to 2016 Duramax 6.6L. The front thermostat is mounted in the forward position of the thermostat housing and is identified by its symmetrical shape. It opens at 185 degrees, allowing coolant to flow to the radiator. The rear position thermostat is located toward the firewall. It's identified by its offset design and has bleeder valves built in. It opens at 180 degrees, allowing coolant to flow to the radiator.
Kit Includes:
Rear Thermostat
Front Thermostat
Oil Fill Tube Seal
Features:
- OE Fit
- High-Quality Components
- Direct Replacement
Kit Includes:
Rear Thermostat
Front Thermostat
Oil Fill Tube Seal
WARRANTY INFO:
1 Year Limited
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Nice Suit
Color: Black, Size: Large
I wasn't sure how well it would fit, but it fit well. The pants are stretchy, and a little shorter than I wanted. But it looks really nice and I got a lot of complements on it for New Year's Eve. I wish they would let you mix and match the suit jacket and pants.
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Reviewed in the United States on January 5, 2026
★★★★★ 5
Nice and sturdy fabric!
Color: Black, Size: XX-Large, Color: Black, Size: XX-Large
This is a very nice suit with sturdy fabric. I am a plusize female so I sized up since I thought it was cut for a male. It fit perfectly but arms needed hemming. I purchased it for a Great Gatsby theme event, but will wear it as I do any other suit in my wardrobe.
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Spiffy suit for any age.
Color: Black, Size: Large, Color: Black, Size: Large
I purchase this suit for my son's high school fraternity show. He said that it was very comfortable, not to mention my son looked very handsome and daper in it. I love how fast it was shipped and the size was on target.
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Reviewed in the United States on January 3, 2026
★★★★★ 4
Good quality throughout.
Color: Blue, Size: X-Large
Good packaging.
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Reviewed in the United States on December 8, 2025
★★★★★ 5
Absolutely worth it!
Color: Black, Size: XX-Large, Color: Black, Size: XX-Large
Perfect fit! Nice material! Comfortable and breathable! My husband looked absolutely amazing!
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Reviewed in the United States on April 30, 2026