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1999 Mercury Mountaineer

1999 Mercury Mountaineer Heater Valves

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Heater Valve, Vacuum Controlled, with 4 Port, with 4-Port Valve -
Part Number: RF38310003
Guaranteed to Fit
$9.49
Vehicle Fitment
  • 1999 Mercury Mountaineer Base 6 Cyl 4.0L with 4-Port Valve
Product Details
Notes : Vacuum Controlled; With 4 PortWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : 74809, F87H18495AA, F87Z18495AAReplaces OE Number : F87H18495AA, F87Z18495AAProduct Fit : Direct FitReturns Policy : 30-Day Return Policy
Heater Valve, without Engine Oil Cooler -
Part Number: RF38310005
Guaranteed to Fit
$10.49
Vehicle Fitment
  • 1999 Mercury Mountaineer Base 6 Cyl 4.0L Less Engine Oil Cooler
  • 1999 Mercury Mountaineer Base 8 Cyl 5.0L Less Engine Oil Cooler
Product Details
Notes : Without Engine Oil CoolerWarranty : 1-year Replacement unlimited-mileage warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Interchange Part Number : YG426, 1L5Z18495AA, 1L5Z18495ABReplaces OE Number : 1L5Z18495AA, 1L5Z18495ABProduct Fit : Direct FitReturns Policy : 30-Day Return Policy
GPD OE Replacement Heater Valve - Direct Fit, Sold individually
Part Number: GPD8211251
Guaranteed to Fit
$7.49
Vehicle Fitment
  • 1999 Mercury Mountaineer Base 6 Cyl 4.0L 2 Ports; Vacuum Non-Bypass Heater Valve
  • 1999 Mercury Mountaineer Base 8 Cyl 5.0L 2 Ports; Vacuum Non-Bypass Heater Valve
Product Details
Warranty : 1 year GPD limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : GPD OE ReplacementRecommended Use : OE ReplacementProduct Fit : Direct Fit
Motorcraft OE Replacement Heater Valve - Direct Fit, Sold individually
Part Number: MIYG350
Guaranteed to Fit
$33.99
Vehicle Fitment
  • 1999 Mercury Mountaineer All Submodels All Engines With Engine Oil Cooler
Product Details
Warranty : 2-year or unlimited-mile Motorcraft limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Motorcraft OE ReplacementProduct Fit : Direct Fit
Motorcraft OE Replacement Heater Valve - Direct Fit, Sold individually
Part Number: MIYG426
Guaranteed to Fit
$39.49
Vehicle Fitment
  • 1999 Mercury Mountaineer Base 6 Cyl 4.0L Less Engine Oil Cooler
  • 1999 Mercury Mountaineer Base 8 Cyl 5.0L Less Engine Oil Cooler
Product Details
Quantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Motorcraft OE ReplacementInterchange Part Number : RF38310005Product Fit : Direct Fit
Motorcraft OE Replacement Heater Valve - Direct Fit, Sold individually
Part Number: MIYG364
Guaranteed to Fit
$41.99
Vehicle Fitment
  • 1999 Mercury Mountaineer All Submodels All Engines 2 Port Valve
Product Details
Warranty : 2-year or unlimited-mile Motorcraft limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Motorcraft OE ReplacementProduct Fit : Direct Fit
4-Seasons OE Replacement Heater Valve - Direct Fit, Sold individually
Part Number: FS74809
Guaranteed to Fit
$14.49
Vehicle Fitment
  • 1999 Mercury Mountaineer Base 6 Cyl 4.0L with 4-Port Valve
Product Details
Warranty : 120-day 4-Seasons limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : 4-Seasons OE ReplacementInterchange Part Number : RF38310003Product Fit : Direct Fit
GPD OE Replacement Heater Valve - Direct Fit, Sold individually
Part Number: GPD8211250
Guaranteed to Fit
$11.49
Vehicle Fitment
  • 1999 Mercury Mountaineer Base 6 Cyl 4.0L 4 Ports; Vacuum Bypass Heater Valve
  • 1999 Mercury Mountaineer Base 8 Cyl 5.0L 4 Ports; Vacuum Bypass Heater Valve
Product Details
Warranty : 1 year GPD limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : GPD OE ReplacementRecommended Use : OE ReplacementProduct Fit : Direct Fit
4-Seasons OE Replacement Heater Valve - Direct Fit, Sold individually
Part Number: FS74858
Guaranteed to Fit
$24.49
Vehicle Fitment
  • 1999 Mercury Mountaineer Base 6 Cyl 4.0L with 2-Port Valve, Requires Physical Comparison
Product Details
Warranty : 120-day 4-Seasons limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : 4-Seasons OE ReplacementProduct Fit : Direct Fit
GPD OE Replacement Heater Valve - Direct Fit, Sold individually
Part Number: GPD8211329
Guaranteed to Fit
$22.99
Vehicle Fitment
  • 1999 Mercury Mountaineer Base 6 Cyl 4.0L Vacuum Heater Valve
  • 1999 Mercury Mountaineer Base 8 Cyl 5.0L Vacuum Heater Valve
Product Details
Warranty : 1 year GPD limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : GPD OE ReplacementRecommended Use : OE ReplacementProduct Fit : Direct Fit
4-Seasons OE Replacement Heater Valve - Direct Fit, Sold individually
Part Number: FS74859
Guaranteed to Fit
$20.49
Vehicle Fitment
  • 1999 Mercury Mountaineer Base 8 Cyl 5.0L
Product Details
Warranty : 120-day 4-Seasons limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : 4-Seasons OE ReplacementInterchange Part Number : RF38310005Product Fit : Direct Fit
Page 1 of 1 | Showing 1 - 11 of 11 results

Top Rated Products

Fast delivery and easy to replace this part, perfectly đź‘Ś
Eduardo M.
VERIFIED PURCHASER
Very easy order and fast shipping.
Robert R.
VERIFIED PURCHASER

Popular Products

Product Questions & Answers

Q:I want to install this on my 1966 Pontiac GTO to stop coolant flow to the heater core. Is the valve plastic or metal? Are BOTH nipples 5/8"? Show Less
anthony c.
A:BEST ANSWERHi Anthony, thank you for reaching out. This item is metal. We don't have the exact measurement of the ports since this item is a direct fit for the Ford/Lincoln/Lincoln trucks. This item is incompatible with the 1966 Pontiac GTO. Should you need further assistance, feel free to call our Sales team at 1-866-529-0412. Show less
Aldrin P.
 
1 Question, 1 AnswerView all Q&As >

Helpful Automotive Resources

Heating System Parts
Heating System PartsThe blower motor is a fan that forces air through either the heating or the cooling unit of the HVAC system. If you’re running the heater, the motor blows air over the heater core. The warmed air enters the passenger cabin, raising the temperature and fighting off the cold.
How a Heater Control Valve Works (with Diagram)
How a Heater Control Valve Works (with Diagram)Your car’s heater relies on hot coolant—from the engine’s cooling system—to warm the cabin. A typical cooling system has four primary components: the water pump, radiator, thermostat, and heater core.  A typical cooling system has four primary components: the water pump, radiator, thermostat, and heater core.