{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": true,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": true,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": true,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": true,
    "zipPaymentFlag": "c",
    "hassleFreeReturn": true,
    "lifetimeReplacement": true,
    "cpn_off": false
}
2012 Ford F-150
1
0
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Price Match Guarantee
60-Day Returns
Lifetime Replacement
2012 Ford F-150

2012 Ford F-150 Water Pumps

Refine by:

Shop Catalog

Showing 1 - 15 of 41 results
Display item:
15
30
45
Sort by:
Water Pump, 6 Cyl., 3.5L Engine
GMB®
Water Pump, 6 Cyl., 3.5L Engine
Part Number: GMB1253250
Guaranteed to Fit
$66.99
Vehicle Fitment
  • 2012 Ford F-150 FX4 6 Cyl 3.5L
  • 2012 Ford F-150 XLT 6 Cyl 3.5L
  • 2012 Ford F-150 Platinum 6 Cyl 3.5L
  • 2012 Ford F-150 King Ranch 6 Cyl 3.5L
  • 2012 Ford F-150 Lariat 6 Cyl 3.5L
  • 2012 Ford F-150 XL 6 Cyl 3.5L
  • 2012 Ford F-150 FX2 6 Cyl 3.5L
Product Details
Notes : 2.85 in. H x 2.91 in. Diameter HubSeries : OE Replacement SeriesMaterial : AluminumCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementPulley Included : Without PulleyGasket Included : With GasketProduct Fit : Direct FitInterchange Part Number : Airtex AW6691, Gates 43308Warranty : 12-month or 12,000-mile GMB limited warrantyProp 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.

Water Pump, 8 Cyl., 5.0L Engine, Plastic Impeller Material, (1) Outlet, FLEX, with 3-Hole Hub
Gates®
Water Pump, 8 Cyl., 5.0L Engine, Plastic Impeller Material, (1) Outlet, FLEX, with 3-Hole Hub
Part Number: GAT43016
Guaranteed to Fit
$54.49
Vehicle Fitment
  • 2012 Ford F-150 King Ranch 8 Cyl 5.0L FLEX, With 3-Hole Hub
  • 2012 Ford F-150 FX2 8 Cyl 5.0L FLEX, With 3-Hole Hub
  • 2012 Ford F-150 Platinum 8 Cyl 5.0L FLEX, With 3-Hole Hub
  • 2012 Ford F-150 FX4 8 Cyl 5.0L FLEX, With 3-Hole Hub
  • 2012 Ford F-150 STX 8 Cyl 5.0L FLEX, With 3-Hole Hub
  • 2012 Ford F-150 XLT 8 Cyl 5.0L FLEX, With 3-Hole Hub
  • 2012 Ford F-150 Lariat 8 Cyl 5.0L FLEX, With 3-Hole Hub
  • 2012 Ford F-150 XL 8 Cyl 5.0L FLEX, With 3-Hole Hub
Product Details
Notes : Plastic Impeller Material; (1) OutletSeries : Light-Duty SeriesMaterial : Cast AluminumCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementPulley Included : Without PulleyGasket Included : Without GasketProduct Fit : Direct FitColor Finish : NaturalIncludes : O-Ring(s)Warranty : Lifetime Gates limited warrantyProp 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.

Water Pump, 8 Cyl., 5.0L Engine, 4 Mounting Holes On Hub
Dayco®
Water Pump, 8 Cyl., 5.0L Engine, 4 Mounting Holes On Hub
Part Number: DYDP1454
Guaranteed to Fit
$118.99
Vehicle Fitment
  • 2012 Ford F-150 King Ranch 8 Cyl 5.0L 4 Mounting Holes On Hub
  • 2012 Ford F-150 FX2 8 Cyl 5.0L 4 Mounting Holes On Hub
  • 2012 Ford F-150 Platinum 8 Cyl 5.0L 4 Mounting Holes On Hub
  • 2012 Ford F-150 FX4 8 Cyl 5.0L 4 Mounting Holes On Hub
  • 2012 Ford F-150 STX 8 Cyl 5.0L 4 Mounting Holes On Hub
  • 2012 Ford F-150 XLT 8 Cyl 5.0L 4 Mounting Holes On Hub
  • 2012 Ford F-150 Lariat 8 Cyl 5.0L 4 Mounting Holes On Hub
  • 2012 Ford F-150 XL 8 Cyl 5.0L 4 Mounting Holes On Hub
Product Details
Notes : (4) Hub Hole Quantity; (11) Impeller Vane Quantity; (4) Mounting Hole Quantity; Aluminum Housing Material; Standard Impeller Rotation; Serpentine Belt Drive TypeSeries : OE Replacement SeriesCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitIncludes : O-ringWarranty : 125,000-mile Dayco limited warrantyProp 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.

Water Pump, 6 Cyl., 3.7L Engine, with 3-Bolt Pulley Flange
GMB®
Water Pump, 6 Cyl., 3.7L Engine, with 3-Bolt Pulley Flange
Part Number: GMB1253285
Guaranteed to Fit
$102.49
Vehicle Fitment
  • 2012 Ford F-150 STX 6 Cyl 3.7L Supplied With Pulley; With 3-Bolt Pulley Flange
  • 2012 Ford F-150 XL 6 Cyl 3.7L Supplied With Pulley; With 3-Bolt Pulley Flange
  • 2012 Ford F-150 XLT 6 Cyl 3.7L Supplied With Pulley; With 3-Bolt Pulley Flange
Product Details
Series : OE Replacement SeriesCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementWarranty : 12-month or 12,000-mile GMB limited warrantyProp 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.

Water Pump, 6 Cyl., 3.7L Engine, Stamped Steel Impeller Material, FLEX
Gates®
Water Pump, 6 Cyl., 3.7L Engine, Stamped Steel Impeller Material, FLEX
Part Number: GAT43017
Guaranteed to Fit
$76.49
Vehicle Fitment
  • 2012 Ford F-150 STX 6 Cyl 3.7L FLEX
  • 2012 Ford F-150 XL 6 Cyl 3.7L FLEX
  • 2012 Ford F-150 XLT 6 Cyl 3.7L FLEX
Product Details
Notes : Stamped Steel Impeller MaterialSeries : Light-Duty SeriesMaterial : Cast AluminumCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementPulley Included : Without PulleyGasket Included : With GasketProduct Fit : Direct FitColor Finish : NaturalWarranty : Lifetime Gates limited warrantyProp 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.

Water Pump, 8 Cyl., 5.0L Engine, 1 Outlet, Plastic Impeller Material, FLEX
Gates®
Water Pump, 8 Cyl., 5.0L Engine, 1 Outlet, Plastic Impeller Material, FLEX
Part Number: GAT43014
Guaranteed to Fit
$82.49
Vehicle Fitment
  • 2012 Ford F-150 Lariat 8 Cyl 5.0L FLEX
  • 2012 Ford F-150 King Ranch 8 Cyl 5.0L FLEX
  • 2012 Ford F-150 FX2 8 Cyl 5.0L FLEX
  • 2012 Ford F-150 Platinum 8 Cyl 5.0L FLEX
  • 2012 Ford F-150 XL 8 Cyl 5.0L FLEX
  • 2012 Ford F-150 FX4 8 Cyl 5.0L FLEX
  • 2012 Ford F-150 STX 8 Cyl 5.0L FLEX
  • 2012 Ford F-150 XLT 8 Cyl 5.0L FLEX
Product Details
Notes : 1 Outlet; Plastic Impeller MaterialSeries : OE Replacement SeriesMaterial : AluminumCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementPulley Included : Without PulleyGasket Included : Without GasketProduct Fit : Direct FitColor Finish : NaturalIncludes : O-Ring(s)Warranty : Lifetime Gates limited warrantyProp 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.

Water Pump, 6 Cyl., 3.5/3.7L Engine, Water Pump Mounting Cover
GMB®
Water Pump, 6 Cyl., 3.5/3.7L Engine, Water Pump Mounting Cover
Part Number: GMB1253260
Guaranteed to Fit
$47.99
Vehicle Fitment
  • 2012 Ford F-150 FX4 6 Cyl 3.5L Water Pump Mounting Cover
  • 2012 Ford F-150 Platinum 6 Cyl 3.5L Water Pump Mounting Cover
  • 2012 Ford F-150 XLT 6 Cyl 3.5L Water Pump Mounting Cover
  • 2012 Ford F-150 King Ranch 6 Cyl 3.5L Water Pump Mounting Cover
  • 2012 Ford F-150 XL 6 Cyl 3.7L Water Pump Mounting Cover
  • 2012 Ford F-150 STX 6 Cyl 3.7L Water Pump Mounting Cover
  • 2012 Ford F-150 Lariat 6 Cyl 3.5L Water Pump Mounting Cover
  • 2012 Ford F-150 XL 6 Cyl 3.5L Water Pump Mounting Cover
  • 2012 Ford F-150 FX2 6 Cyl 3.5L Water Pump Mounting Cover
  • 2012 Ford F-150 XLT 6 Cyl 3.7L Water Pump Mounting Cover
Product Details
Series : OE Replacement SeriesCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementPulley Included : Without PulleyGasket Included : With GasketProduct Fit : Direct FitWarranty : 12-month or 12,000-mile GMB limited warrantyProp 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.

Water Pump, 6 Cyl., 3.7L Engine
GMB®
Water Pump, 6 Cyl., 3.7L Engine
Part Number: GMB1253280
Guaranteed to Fit
$65.49
Vehicle Fitment
  • 2012 Ford F-150 STX 6 Cyl 3.7L
  • 2012 Ford F-150 XL 6 Cyl 3.7L
  • 2012 Ford F-150 XLT 6 Cyl 3.7L
Product Details
Series : GMB OE ReplacementCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementPulley Included : Without PulleyGasket Included : With GasketProduct Fit : Direct FitColor Finish : NaturalInterchange Part Number : 43017Warranty : 12-month or 12,000-mile GMB limited warrantyProp 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.

Water Pump, 8 Cyl., 5.0L Engine, with 4-Bolt Pulley Flange
GMB®
Water Pump, 8 Cyl., 5.0L Engine, with 4-Bolt Pulley Flange
Part Number: GMB1253270
Guaranteed to Fit
$77.49
Vehicle Fitment
  • 2012 Ford F-150 King Ranch 8 Cyl 5.0L With 4-Bolt Pulley Flange
  • 2012 Ford F-150 FX2 8 Cyl 5.0L With 4-Bolt Pulley Flange
  • 2012 Ford F-150 Platinum 8 Cyl 5.0L With 4-Bolt Pulley Flange
  • 2012 Ford F-150 FX4 8 Cyl 5.0L With 4-Bolt Pulley Flange
  • 2012 Ford F-150 XLT 8 Cyl 5.0L With 4-Bolt Pulley Flange
  • 2012 Ford F-150 STX 8 Cyl 5.0L With 4-Bolt Pulley Flange
  • 2012 Ford F-150 Lariat 8 Cyl 5.0L With 4-Bolt Pulley Flange
  • 2012 Ford F-150 XL 8 Cyl 5.0L With 4-Bolt Pulley Flange
Product Details
Series : GMB OE ReplacementCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementPulley Included : Without PulleyGasket Included : With GasketProduct Fit : Direct FitColor Finish : NaturalInterchange Part Number : 43014Warranty : 12-month or 12,000-mile GMB limited warrantyProp 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.

Water Pump, 8 Cyl., 5.0L Engine, 3 Mounting Holes On Hub -
Dayco®
Water Pump, 8 Cyl., 5.0L Engine, 3 Mounting Holes On Hub -
Part Number: DYDP1900
Guaranteed to Fit
$83.99
Vehicle Fitment
  • 2012 Ford F-150 King Ranch 8 Cyl 5.0L 3 Mounting Holes On Hub
  • 2012 Ford F-150 FX2 8 Cyl 5.0L 3 Mounting Holes On Hub
  • 2012 Ford F-150 Platinum 8 Cyl 5.0L 3 Mounting Holes On Hub
  • 2012 Ford F-150 FX4 8 Cyl 5.0L 3 Mounting Holes On Hub
  • 2012 Ford F-150 XLT 8 Cyl 5.0L 3 Mounting Holes On Hub
  • 2012 Ford F-150 STX 8 Cyl 5.0L 3 Mounting Holes On Hub
  • 2012 Ford F-150 Lariat 8 Cyl 5.0L 3 Mounting Holes On Hub
  • 2012 Ford F-150 XL 8 Cyl 5.0L 3 Mounting Holes On Hub
Product Details
Notes : (3) Hub Hole Quantity; (8) Impeller Vane Quantity; (4) Mounting Hole Quantity; Aluminum Housing Material; Standard Impeller RotationSeries : OE Replacement SeriesCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : Direct FitIncludes : O-ringWarranty : 125,000-mile Dayco limited warrantyProp 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.

Water Pump, 6 Cyl., 3.5L Engine, Standard Impeller Rotation, Accessory Belt Drive Style, Turbocharged, GAS, with 3-Hole Hub
Gates®
Water Pump, 6 Cyl., 3.5L Engine, Standard Impeller Rotation, Accessory Belt Drive Style, Turbocharged, GAS, with 3-Hole Hub
Part Number: GAT42183
Guaranteed to Fit
$69.49
Vehicle Fitment
  • 2012 Ford F-150 FX4 6 Cyl 3.5L Turbocharged, GAS, With 3-Hole Hub
  • 2012 Ford F-150 Platinum 6 Cyl 3.5L Turbocharged, GAS, With 3-Hole Hub
  • 2012 Ford F-150 XLT 6 Cyl 3.5L Turbocharged, GAS, With 3-Hole Hub
  • 2012 Ford F-150 King Ranch 6 Cyl 3.5L Turbocharged, GAS, With 3-Hole Hub
  • 2012 Ford F-150 Lariat 6 Cyl 3.5L Turbocharged, GAS, With 3-Hole Hub
  • 2012 Ford F-150 XL 6 Cyl 3.5L Turbocharged, GAS, With 3-Hole Hub
  • 2012 Ford F-150 FX2 6 Cyl 3.5L Turbocharged, GAS, With 3-Hole Hub
Product Details
Notes : Plastic Impeller Material; Standard Impeller Rotation; Accessory Belt Drive StyleSeries : OE Replacement SeriesMaterial : Cast AluminumCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementGasket Included : With GasketProduct Fit : Direct FitWarranty : Lifetime Gates limited warrantyProp 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.

Water Pump, 8 Cyl., 6.2L Engine
GMB®
Water Pump, 8 Cyl., 6.2L Engine
Part Number: GMB1253360
Guaranteed to Fit
$65.99
Vehicle Fitment
  • 2012 Ford F-150 SVT Raptor 8 Cyl 6.2L
  • 2012 Ford F-150 Harley-Davidson Edition 8 Cyl 6.2L
  • 2012 Ford F-150 Lariat 8 Cyl 6.2L
  • 2012 Ford F-150 Platinum 8 Cyl 6.2L
Product Details
Notes : 3.43 in. H x 2.91 in. Diameter HubSeries : OE Replacement SeriesMaterial : AluminumCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementPulley Included : Without PulleyProduct Fit : Direct FitInterchange Part Number : Airtex AW6006, Gates 43422Warranty : 12-month or 12,000-mile GMB limited warrantyProp 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.

Water Pump, 6 Cyl., 3.5L Engine, 3 Hole Pulley Mount -
Dayco®
Water Pump, 6 Cyl., 3.5L Engine, 3 Hole Pulley Mount -
Part Number: DYDP1895
Guaranteed to Fit
$73.99
Vehicle Fitment
  • 2012 Ford F-150 FX4 6 Cyl 3.5L 3 Hole Pulley Mount
  • 2012 Ford F-150 XLT 6 Cyl 3.5L 3 Hole Pulley Mount
  • 2012 Ford F-150 Platinum 6 Cyl 3.5L 3 Hole Pulley Mount
  • 2012 Ford F-150 King Ranch 6 Cyl 3.5L 3 Hole Pulley Mount
  • 2012 Ford F-150 Lariat 6 Cyl 3.5L 3 Hole Pulley Mount
  • 2012 Ford F-150 XL 6 Cyl 3.5L 3 Hole Pulley Mount
  • 2012 Ford F-150 FX2 6 Cyl 3.5L 3 Hole Pulley Mount
Product Details
Notes : (3) Hub Hole Quantity; (11) Impeller Vane Quantity; (11) Mounting Hole Quantity; Aluminum Housing Material; Standard Impeller Rotation; Serpentine Belt Drive TypeSeries : OE Replacement SeriesCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementGasket Included : With GasketProduct Fit : Direct FitWarranty : 125,000-mile Dayco limited warrantyProp 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.

Water Pump, 6 Cyl., 3.5L Engine, with 3-Bolt Pulley Flange
GMB®
Water Pump, 6 Cyl., 3.5L Engine, with 3-Bolt Pulley Flange
Part Number: GMB1253265
Guaranteed to Fit
$71.99
Vehicle Fitment
  • 2012 Ford F-150 FX4 6 Cyl 3.5L Supplied With Pulley; With 3-Bolt Pulley Flange
  • 2012 Ford F-150 XLT 6 Cyl 3.5L Supplied With Pulley; With 3-Bolt Pulley Flange
  • 2012 Ford F-150 Platinum 6 Cyl 3.5L Supplied With Pulley; With 3-Bolt Pulley Flange
  • 2012 Ford F-150 King Ranch 6 Cyl 3.5L Supplied With Pulley; With 3-Bolt Pulley Flange
  • 2012 Ford F-150 Lariat 6 Cyl 3.5L Supplied With Pulley; With 3-Bolt Pulley Flange
  • 2012 Ford F-150 XL 6 Cyl 3.5L Supplied With Pulley; With 3-Bolt Pulley Flange
  • 2012 Ford F-150 FX2 6 Cyl 3.5L Supplied With Pulley; With 3-Bolt Pulley Flange
Product Details
Series : OE Replacement SeriesCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementWarranty : 12-month or 12,000-mile GMB limited warrantyProp 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.

Water Pump, 6 Cyl., 3.7L Engine -
Dayco®
Water Pump, 6 Cyl., 3.7L Engine -
Part Number: DYDP1460
Guaranteed to Fit
$89.99
Vehicle Fitment
  • 2012 Ford F-150 STX 6 Cyl 3.7L
  • 2012 Ford F-150 XL 6 Cyl 3.7L
  • 2012 Ford F-150 XLT 6 Cyl 3.7L
Product Details
Notes : (4) Hub Hole Quantity; (11) Impeller Vane Quantity; (11) Mounting Hole Quantity; Aluminum Housing Material; Reverse Impeller Rotation; Serpentine Belt Drive TypeSeries : OE Replacement SeriesCondition : NewQuantity Sold : Sold individuallyRecommended Use : OE ReplacementGasket Included : With GasketProduct Fit : Direct FitIncludes : O-ringWarranty : 125,000-mile Dayco limited warrantyProp 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.

Page 1 of 3 | Showing 1 - 15 of 41 results

Top Rated Products

Gates Water Pump, 8 Cyl., 5.0L Engine, Plastic Impeller Material, (1) Outlet, FLEX, with 3-Hole Hub -
$54.49( Review)
Great experience with your company
Earl K.
VERIFIED PURCHASER
GMB Water Pump, 6 Cyl., 3.7L Engine -
$65.49( Review)
Great parts
Jose B.
VERIFIED PURCHASER

Popular Products

Helpful Automotive Resources

P2181 Code: Cooling System Performance
P2181 Code: Cooling System PerformanceUnlike other DTCs that point to specific components that might be malfunctioning, this powertrain code is generic and does not include any specifics. Therefore, it is important to check for other codes that may have been logged by onboard diagnostics. .kadence-column_dd0453-83 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_dd0453-83 > .kt-inside-inner-col,.kadence-column_dd0453-83 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_dd0453-83 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_dd0453-83 >
6 Signs of a Bad Radiator
6 Signs of a Bad RadiatorA common sign that something is wrong with the radiator is when your engine starts to overheat. This can be caused by a faulty thermostat. When a defective thermostat no longer opens, the engine will overheat and cause a breakdown. Leaks