Thermostat Kit
$156.95
BFNG
Part # 5166KTUS
4.7(47 reviews)UltraStat T-Stat Kit
Fits Buick, Pontiac, Saturn & more — 173 vehicle applications
Call for Price
Contact us at 1-866-461-2787 for pricing
available
Contact us at 1-866-461-2787 for pricing
Call for PriceFree ShippingOrders $99+
WarrantyManufacturer backed
Easy Returns30-day policy
Canadian OwnedShipped across Canada
Will this fit your vehicle?
Select your vehicle to check fitment.
BFNG 5166KTUS Vehicle Fitment
Fits 173 vehiclesThis UltraStat T-Stat Kit fits Buick, Pontiac, Saturn, Chevrolet and 1 more makes vehicles.
2000-2005 Chevrolet Impala
1997-2005 Chevrolet Venture
1997-2004 Chevrolet Malibu
1996 Chevrolet Lumina APV
1995-2005 Chevrolet Monte Carlo
1994-1996 Chevrolet Beretta
1994-1996 Chevrolet Corsica
1991-2001 Chevrolet Lumina
BFNG 5166KTUS Specifications
- Prop 65
- ADVERTENCIA: Riesgo de cáncer y daños reproductivos - www.p65warnings.ca.gov
- Terminal Type
- N/A
- Seal Quantity
- 1
- Prop 65
- WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
- Material
- Copper, Rubber, Stainless Steel, Steel
- Material
- Acero, Acero inoxidable, Cobre, Caucho
BFNG 5166KTUS Interchange Numbers
This part replaces and is compatible with the following part numbers
Interchange Numbers
5166KTUS5166KTUSSUTK66155166KTUS
BFNG 5166KTUS Product Description
Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant.
Key Features
- Exclusive BLVT™ Valve Technology minimizes thermal shock to cooling system components
- Heavy gauge stainless steel components offer increased reliability and long-lasting durability
- AccuSpring™ Design for stable temperature control and increased cabin comfort
- Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX™ wax mixture provides quicker reaction time
Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant.
About BFNG
Shop BFNG Engine Coolant Thermostat Housing Assembly at Autrex with vehicle fitment details, current pricing, and checkout options for the BFNG 5166KTUS. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Ratings & Reviews
4.7out of 5
Based on 47 reviews
- 538
- 46
- 31
- 21
- 11
- Direct fit, no surprisesMarc D.Verified BuyerMay 28, 2026
Lined up perfectly with the original. Install took about an hour with the right press. Solid feel back in the steering, no more clunk over bumps.
Installed on 2016 Ram 1500
- Shipped fast across CanadaJen P.Verified BuyerMay 14, 2026
Ordered on a Monday, had it by Wednesday in Calgary. Greasable fitting is a nice touch. Quality looks on par with OEM.
Installed on 2014 Chevrolet Silverado 1500
- Good part, double-check your sideSteve R.Verified BuyerApr 30, 2026
Works great so far. Just confirm fitment for your exact trim before ordering — the fitment list on the page was accurate for mine.
Installed on 2017 Ford F-150
- Quiet againAmrit S.Verified BuyerApr 19, 2026
Replaced both sides at the same time. The knocking noise is completely gone. Boot quality feels durable.
Installed on 2015 GMC Sierra 1500
- Would buy againDaniel L.Mar 22, 2026
Second one I've bought from Autrex. Packaging was secure and the part matched the photos exactly.
Installed on 2013 Dodge Durango
Frequently Asked Questions — BFNG 5166KTUS
What vehicles does the BFNG 5166KTUS fit?
The BFNG 5166KTUS fits 26 vehicle applications including 2002-2007 Buick Rendezvous, 2005-2006 Buick Terraza, 1999-2006 Pontiac Montana, 2005-2006 Saturn Relay, 1994-2005 Buick Century and 21 more. Check the full fitment list above to confirm your vehicle.
What parts does the BFNG 5166KTUS replace?
The BFNG 5166KTUS is a direct replacement for 5166KTUS, 5166KTUS, SUTK6615, 5166KTUS. See the full interchange list for all compatible replacements.
What are the shipping options for the BFNG 5166KTUS?
Shipping options for the BFNG 5166KTUS are shown during checkout and may vary by item, address, and availability. Eligible orders over $99 may qualify for free shipping, with some exceptions. Call 1-866-461-2787 if you need help confirming shipping or pickup before ordering.
What is the price of the BFNG 5166KTUS?
For current pricing on the BFNG 5166KTUS, please call us at 1-866-461-2787. Availability and final order details are confirmed before checkout is completed.
Is the UltraStat T-Stat Kit a direct fit replacement?
Yes, the UltraStat T-Stat Kit by BFNG is designed as a direct fit replacement. Use our vehicle selector to confirm compatibility with your specific vehicle.
What warranty does the UltraStat T-Stat Kit come with?
The UltraStat T-Stat Kit comes with the standard BFNG manufacturer warranty. Please check the product specifications for exact warranty terms.
