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Spectre Performance Engine Thermostats for 1978 Chevrolet K20

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    • Engine Cooling Components
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  • Car & Truck Parts & Accessories
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  • Thermostats & Housings
  • Spectre Performance Engine Thermostats for 1978 Chevrolet K20

Shop by category

  • Engine Cooling Components
    • Thermostats & Housings
    • Caps
    • Clamps & Hardware
    • Coolant Hoses
    • Engine Oil Coolers & Lines
    • Expansion & Overflow Tanks
    • Fan & Shroud Assemblies
    • Fan Blades
    • Fan Clutches
    • Fan Motors
    • Gaskets, Seals & O-Rings
    • Other Engine Cooling Components
    • Radiators
    • Temperature Sensors
    • Water Pumps
    • Spectre Polished Aluminum Performance Water Neck for 1997+ LSx Engines - Image 1 of 4
    • Spectre Polished Aluminum Performance Water Neck for 1997+ LSx Engines - Image 2 of 4
    • Spectre Polished Aluminum Performance Water Neck for 1997+ LSx Engines - Image 3 of 4
    • Spectre Polished Aluminum Performance Water Neck for 1997+ LSx Engines - Image 4 of 4

    Spectre Polished Aluminum Performance Water Neck for 1997+ LSx Engines

    Brand New · Spectre Performance
    S$ 13.14
    Was: S$ 26.27was - S$ 26.27
    S$ 37.13 shipping
    A⁣7⁣ ⁣S⁣p⁣R⁣V⁣о⁣ ⁣N⁣n⁣s⁣A⁣ ⁣R⁣5⁣ ⁣o⁣r⁣e⁣B⁣J⁣ ⁣d⁣⁣⁣⁣⁣
    • Spectre 4930 45 Degree Water Neck, Pol Alum, O-Ring, Fits Chevy, Each - Image 1 of 4
    • Spectre 4930 45 Degree Water Neck, Pol Alum, O-Ring, Fits Chevy, Each - Image 2 of 4
    • Spectre 4930 45 Degree Water Neck, Pol Alum, O-Ring, Fits Chevy, Each - Image 3 of 4
    • Spectre 4930 45 Degree Water Neck, Pol Alum, O-Ring, Fits Chevy, Each - Image 4 of 4

    Spectre 4930 45 Degree Water Neck, Pol Alum, O-Ring, Fits Chevy, Each

    Free 30-day Returns|Expert Tech Support
    Brand New · Spectre Performance
    S$ 151.01
    Was: S$ 173.66was - S$ 173.66
    S$ 32.59 shipping
    Ѕ⁣N⁣I⁣ ⁣p⁣9⁣o⁣n⁣s⁣6⁣o⁣r⁣e⁣ ⁣d⁣⁣⁣R⁣6⁣ ⁣8⁣K⁣⁣ ⁣⁣3⁣M⁣⁣
    • Chrome Thermostat Housing Water Neck Chevy V8 Engine 1/2" NPT Fitting - Image 1 of 2
    • Chrome Thermostat Housing Water Neck Chevy V8 Engine 1/2" NPT Fitting - Image 2 of 2

    Chrome Thermostat Housing Water Neck Chevy V8 Engine 1/2" NPT Fitting

    Brand New · Spectre Performance
    S$ 26.80
    Was: S$ 33.50was - S$ 33.50
    or Best Offer
    S$ 28.93 shipping
    Only 1 left!
    G⁣R⁣ ⁣S⁣U⁣р⁣F⁣o⁣ ⁣1⁣N⁣n⁣s⁣o⁣r⁣ ⁣0⁣e⁣9⁣ ⁣d⁣7⁣⁣G⁣⁣⁣ ⁣⁣
    • Spectre 4932 Thermostat Housing Fits 1997-Later LS Engines Straight Neck Polishe - Image 1 of 2
    • Spectre 4932 Thermostat Housing Fits 1997-Later LS Engines Straight Neck Polishe - Image 2 of 2

    Spectre 4932 Thermostat Housing Fits 1997-Later LS Engines Straight Neck Polishe

    JEGS – Selection, Value, Lifetime Support Since 1960…
    Brand New · Spectre Performance
    S$ 44.75
    S$ 51.83 shipping
    Ѕ⁣p⁣o⁣n⁣s⁣E⁣o⁣M⁣ ⁣1⁣E⁣r⁣e⁣ ⁣d⁣⁣⁣⁣⁣⁣E⁣G⁣⁣⁣⁣ ⁣R⁣⁣
  • Spectre Chrome Plated Aluminum Thermostat Housing Water Neck 66-up Chevy SBC BBC - Image 1 of 3

    Spectre Chrome Plated Aluminum Thermostat Housing Water Neck 66-up Chevy SBC BBC

    Brand New · Spectre Performance
    S$ 18.12
    S$ 28.66 shipping
    50 sold
    K⁣⁣G⁣ ⁣Z⁣N⁣ ⁣⁣J⁣⁣E⁣ ⁣L⁣G⁣⁣ ⁣I⁣⁣⁣1⁣⁣⁣ ⁣⁣⁣ ⁣⁣⁣
  • Spectre Chrome Water Outlet Neck Thermostat Housing Early SBC Small Block Chevy - Image 1 of 4

    Spectre Chrome Water Outlet Neck Thermostat Housing Early SBC Small Block Chevy

    Brand New · Spectre Performance
    S$ 20.91
    S$ 28.75 shipping
    27 watching
    G⁣⁣N⁣ ⁣E⁣9⁣⁣⁣⁣⁣⁣ ⁣V⁣9⁣⁣ ⁣⁣Q⁣H⁣⁣ ⁣J⁣Q⁣ ⁣P⁣⁣⁣ ⁣
  • Spectre 42313 Chrome Water Neck For Late Model Chevrolet V8 New - Image 1 of 4

    Spectre 42313 Chrome Water Neck For Late Model Chevrolet V8 New

    Brand New · Spectre Performance
    S$ 23.63
    S$ 29.74 shipping
    ⁣5⁣⁣C⁣ ⁣⁣9⁣⁣⁣T⁣ ⁣V⁣⁣L⁣⁣ ⁣⁣M⁣4⁣ ⁣⁣G⁣K⁣ ⁣⁣⁣⁣⁣
  • Water Neck - Image 1 of 1

    Water Neck

    Brand New · Spectre Performance
    S$ 64.13
    S$ 30.02 shipping
    ⁣N⁣⁣⁣9⁣ ⁣⁣⁣⁣3⁣V⁣⁣ ⁣1⁣Y⁣ ⁣⁣⁣7⁣I⁣ ⁣⁣⁣D⁣K⁣ ⁣⁣⁣
  • Spectre 4232 Chrome Water Neck Thermostat Housing SB Ford SBF 289 302 351W V8 - Image 1 of 4

    Spectre 4232 Chrome Water Neck Thermostat Housing SB Ford SBF 289 302 351W V8

    New (Other) · Spectre Performance
    S$ 22.31
    S$ 29.70 shipping
    H⁣6⁣ ⁣⁣⁣⁣⁣S⁣G⁣⁣ ⁣4⁣⁣⁣T⁣⁣ ⁣T⁣L⁣ ⁣⁣⁣⁣⁣⁣⁣Q⁣P⁣
  • Spectre 42313 Engine Coolant Thermostat Housing - Image 1 of 4

    Spectre 42313 Engine Coolant Thermostat Housing

    New (Other) · Spectre Performance
    S$ 16.72
    S$ 28.62 shipping
    9⁣⁣⁣⁣⁣⁣⁣⁣M⁣⁣ ⁣9⁣⁣G⁣⁣ ⁣⁣N⁣⁣M⁣ ⁣⁣O⁣I⁣⁣⁣ ⁣⁣
  • Spectre for Chevy V8 (Early) Water Neck - Chrome - Image 1 of 4

    Spectre for Chevy V8 (Early) Water Neck - Chrome

    FREE AND FAST SHIPPING. FREE RETURNS. 100% AUTHENTIC!
    Brand New · Spectre Performance
    S$ 51.49
    S$ 30.57 shipping
    ⁣⁣Z⁣L⁣⁣ ⁣4⁣V⁣⁣⁣ ⁣E⁣⁣⁣⁣S⁣ ⁣Z⁣R⁣⁣⁣⁣⁣ ⁣4⁣9⁣ ⁣L⁣
  • SPECTRE 4230 WATER NECK FOR CHEVY V-8 1955-1965 - Image 1 of 1

    SPECTRE 4230 WATER NECK FOR CHEVY V-8 1955-1965

    New (Other) · Spectre Performance
    S$ 6.99
    S$ 63.09 shipping
    4⁣O⁣ ⁣I⁣⁣S⁣ ⁣⁣Q⁣B⁣ ⁣2⁣⁣⁣⁣⁣R⁣⁣ ⁣⁣T⁣5⁣ ⁣L⁣⁣⁣ ⁣⁣
  • Spectre 42313 Chrome Coolant Thermostat Housing For Chevrolet SBC BBC Late Model - Image 1 of 4

    Spectre 42313 Chrome Coolant Thermostat Housing For Chevrolet SBC BBC Late Model

    Brand New · Spectre Performance
    S$ 23.77
    S$ 29.74 shipping
    E⁣⁣⁣W⁣⁣ ⁣9⁣⁣⁣H⁣ ⁣2⁣⁣U⁣ ⁣J⁣⁣H⁣ ⁣P⁣⁣M⁣ ⁣⁣⁣⁣ ⁣⁣
  • Spectre 4933 90 Degree Water Neck, Pol Billet Aluminum, Fits Chevy, Each - Image 1 of 4

    Spectre 4933 90 Degree Water Neck, Pol Billet Aluminum, Fits Chevy, Each

    Free 30-day Returns|Expert Tech Support
    Brand New · Spectre Performance
    S$ 55.94
    Was: S$ 64.34was - S$ 64.34
    S$ 49.35 shipping
    B⁣Y⁣S⁣р⁣o⁣ ⁣n⁣s⁣o⁣r⁣3⁣F⁣ ⁣e⁣Y⁣K⁣ ⁣1⁣d⁣⁣J⁣⁣ ⁣⁣D⁣⁣⁣H⁣
  • Spectre Performance 42303 Water Neck - Image 1 of 1

    Spectre Performance 42303 Water Neck

    Brand New · Spectre Performance
    S$ 51.13
    S$ 29.64 shipping
    4⁣S⁣G⁣p⁣о⁣ ⁣F⁣n⁣D⁣s⁣ ⁣o⁣7⁣1⁣ ⁣Q⁣r⁣e⁣d⁣⁣Z⁣ ⁣⁣⁣⁣7⁣Q⁣ ⁣
  • Spectre 42303 Thermostat Housing Fits 1955-65 Chevy 265-454 V8 Triple-Chrome Pla - Image 1 of 1

    Spectre 42303 Thermostat Housing Fits 1955-65 Chevy 265-454 V8 Triple-Chrome Pla

    JEGS – Selection, Value, Lifetime Support Since 1960…
    Brand New · Spectre Performance
    S$ 33.56
    S$ 52.40 shipping
    R⁣E⁣ ⁣S⁣U⁣p⁣F⁣o⁣ ⁣N⁣3⁣ ⁣T⁣n⁣S⁣s⁣o⁣ ⁣K⁣1⁣r⁣ ⁣⁣е⁣⁣ ⁣d⁣⁣
  • Spectre Performance 42313 Water Neck - Image 1 of 1

    Spectre Performance 42313 Water Neck

    Brand New · Spectre Performance
    S$ 30.93
    S$ 25.28 shipping
    ⁣T⁣E⁣ ⁣⁣4⁣V⁣⁣ ⁣3⁣4⁣⁣⁣⁣⁣ ⁣⁣⁣⁣⁣⁣2⁣⁣⁣I⁣ ⁣E⁣⁣
  • NEW Spectre Performance O-RING Chrome Water Necks Chevy SB Early - Image 1 of 1

    NEW Spectre Performance O-RING Chrome Water Necks Chevy SB Early

    Brand New · Spectre Performance
    S$ 19.51
    or Best Offer
    S$ 29.61 shipping
    4⁣⁣5⁣⁣⁣ ⁣⁣C⁣⁣S⁣ ⁣⁣⁣⁣4⁣⁣U⁣⁣ ⁣4⁣S⁣⁣⁣⁣ ⁣E⁣O⁣⁣
  • Engine Coolant Thermostat Housing-CARB Spectre 42303 - Image 1 of 1

    Engine Coolant Thermostat Housing-CARB Spectre 42303

    Brand New · Spectre Performance
    S$ 49.70
    S$ 29.60 shipping
    ⁣⁣G⁣⁣H⁣ ⁣Z⁣H⁣ ⁣⁣⁣⁣G⁣H⁣⁣ ⁣⁣A⁣⁣I⁣⁣ ⁣A⁣⁣9⁣ ⁣E⁣⁣
  • SPECTRE 42321 Chrome Thermostat Housing Water Outlet Neck - SBF Ford 302 351 V8 - Image 1 of 4

    SPECTRE 42321 Chrome Thermostat Housing Water Outlet Neck - SBF Ford 302 351 V8

    Brand New · Spectre Performance
    S$ 20.91
    S$ 28.75 shipping
    ⁣0⁣E⁣⁣⁣ ⁣⁣⁣⁣⁣K⁣⁣H⁣⁣⁣⁣⁣ ⁣6⁣W⁣⁣⁣⁣ ⁣⁣2⁣V⁣⁣
  • Spectre Performance 4232 Chrome Water Neck for Small Block Ford O-Ring Design - Image 1 of 1

    Spectre Performance 4232 Chrome Water Neck for Small Block Ford O-Ring Design

    Brand New · Spectre Performance
    S$ 27.96
    S$ 28.96 shipping
    ⁣⁣M⁣⁣T⁣ ⁣1⁣⁣S⁣ ⁣P⁣⁣⁣Q⁣⁣ ⁣⁣Y⁣V⁣ ⁣⁣⁣⁣⁣U⁣H⁣ ⁣⁣
  • Spectre 42303 Water Neck, Chevy SEALED NEW - Image 1 of 2

    Spectre 42303 Water Neck, Chevy SEALED NEW

    Brand New · Spectre Performance
    S$ 34.96
    S$ 29.17 shipping
    ⁣V⁣N⁣ ⁣⁣⁣M⁣⁣O⁣ ⁣⁣I⁣⁣3⁣ ⁣2⁣⁣⁣D⁣ ⁣2⁣⁣X⁣ ⁣A⁣⁣ ⁣⁣
  • Spectre 4737 Water Neck; Pontiac V8 - Image 1 of 3

    Spectre 4737 Water Neck; Pontiac V8

    Brand New · Spectre Performance
    S$ 32.16
    S$ 29.08 shipping
    ⁣I⁣⁣6⁣⁣⁣ ⁣⁣C⁣⁣⁣⁣⁣S⁣⁣ ⁣F⁣⁣P⁣ ⁣S⁣K⁣ ⁣W⁣⁣⁣⁣N⁣
  • Spectre Performance 4933 Water Neck - Image 1 of 1

    Spectre Performance 4933 Water Neck

    Brand New · Spectre Performance
    S$ 61.12
    S$ 29.94 shipping
    ⁣⁣P⁣⁣⁣⁣⁣⁣E⁣ ⁣9⁣⁣⁣T⁣ ⁣⁣G⁣⁣N⁣ ⁣⁣⁣Z⁣⁣⁣⁣⁣⁣
  • Spectre Performance 42303 Water Neck with Hardware for Chevrolet NEW - Image 1 of 1

    Spectre Performance 42303 Water Neck with Hardware for Chevrolet NEW

    New (Other) · Spectre Performance
    S$ 7.67
    or Best Offer
    S$ 38.16 shipping
    E⁣J⁣ ⁣U⁣⁣⁣⁣T⁣ ⁣⁣6⁣M⁣ ⁣L⁣Z⁣⁣ ⁣⁣D⁣⁣⁣⁣⁣⁣7⁣⁣⁣⁣
  • Spectre Performance 42303 Water Neck with Hardware for Chevrolet NEW - Image 1 of 2

    Spectre Performance 42303 Water Neck with Hardware for Chevrolet NEW

    Brand New · Spectre Performance
    S$ 11.18
    S$ 37.55 shipping
    N⁣W⁣ ⁣⁣⁣⁣1⁣G⁣ ⁣G⁣7⁣⁣ ⁣⁣8⁣5⁣⁣⁣ ⁣N⁣K⁣ ⁣⁣⁣⁣ ⁣⁣⁣
  • Spectre 42303 Water Neck, Fits Chevy 265-427, GMC 283-347 - Image 1 of 4

    Spectre 42303 Water Neck, Fits Chevy 265-427, GMC 283-347

    Ships directly from the vendor within 2 days
    Brand New · Spectre Performance
    S$ 44.75
    Was: S$ 51.47was - S$ 51.47
    S$ 51.83 shipping
    ⁣⁣G⁣⁣⁣⁣7⁣ ⁣M⁣⁣4⁣⁣⁣⁣⁣ ⁣⁣3⁣⁣9⁣ ⁣⁣⁣M⁣⁣⁣⁣⁣
  • Water Neck - Image 1 of 1

    Water Neck

    Brand New · Spectre Performance
    S$ 64.52
    S$ 44.01 shipping
    C⁣W⁣⁣ ⁣⁣S⁣I⁣ ⁣⁣⁣8⁣⁣D⁣ ⁣B⁣⁣8⁣⁣⁣ ⁣K⁣⁣9⁣⁣ ⁣⁣O⁣⁣
  • Spectre 42313 Thermostat Housing Fits 1965-73 Chevy V8 Triple-Chrome Plated Bolt - Image 1 of 1

    Spectre 42313 Thermostat Housing Fits 1965-73 Chevy V8 Triple-Chrome Plated Bolt

    JEGS – Selection, Value, Lifetime Support Since 1960…
    Brand New · Spectre Performance
    S$ 14.67
    S$ 51.84 shipping
    P⁣A⁣ ⁣S⁣G⁣0⁣p⁣o⁣ ⁣M⁣n⁣D⁣s⁣ ⁣6⁣о⁣K⁣r⁣e⁣d⁣ ⁣⁣L⁣⁣⁣⁣4⁣ ⁣
  • Spectre for 66+ Chevy V8 Water Neck - Chrome - Image 1 of 4

    Spectre for 66+ Chevy V8 Water Neck - Chrome

    FREE AND FAST SHIPPING. FREE RETURNS. 100% AUTHENTIC!
    Brand New · Spectre Performance
    S$ 31.31
    S$ 47.31 shipping
    S⁣F⁣p⁣o⁣n⁣8⁣ ⁣7⁣s⁣о⁣7⁣ ⁣T⁣Q⁣ ⁣r⁣D⁣e⁣B⁣ ⁣d⁣⁣⁣⁣7⁣3⁣ ⁣⁣
  • Spectre for Chevy 90 Degree Swivel Water Neck - Polished Aluminum - Image 1 of 4

    Spectre for Chevy 90 Degree Swivel Water Neck - Polished Aluminum

    FREE AND FAST SHIPPING. FREE RETURNS. 100% AUTHENTIC!
    Brand New · Spectre Performance
    S$ 61.47
    S$ 30.86 shipping
    G⁣7⁣S⁣ ⁣p⁣о⁣n⁣s⁣o⁣r⁣e⁣d⁣W⁣⁣1⁣ ⁣⁣⁣R⁣Y⁣⁣⁣ ⁣⁣7⁣9⁣ ⁣⁣
  • Spectre Performance 4933 Water Neck - Image 1 of 4

    Spectre Performance 4933 Water Neck

    Brand New · Spectre Performance
    S$ 55.94
    S$ 39.64 shipping
    Q⁣⁣D⁣⁣ ⁣⁣J⁣⁣8⁣⁣ ⁣⁣L⁣N⁣⁣⁣ ⁣⁣⁣⁣5⁣V⁣ ⁣D⁣⁣⁣9⁣ ⁣
  • Thermostat Housing Fits Chevy 45 Degree - Image 1 of 1

    Thermostat Housing Fits Chevy 45 Degree

    Brand New · Spectre Performance
    S$ 52.92
    S$ 39.90 shipping
    ⁣Z⁣S⁣ ⁣⁣⁣P⁣⁣⁣3⁣ ⁣⁣I⁣M⁣⁣ ⁣0⁣L⁣ ⁣⁣⁣3⁣9⁣⁣⁣ ⁣⁣⁣
  • Thermostat Housing Fits Chevy 15 Degree - Image 1 of 1

    Thermostat Housing Fits Chevy 15 Degree

    Brand New · Spectre Performance
    S$ 29.43
    S$ 39.20 shipping
    ⁣S⁣⁣D⁣⁣ ⁣L⁣⁣⁣N⁣⁣⁣ ⁣⁣⁣3⁣1⁣ ⁣9⁣⁣⁣⁣⁣⁣⁣⁣2⁣⁣
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  • Brand: Spectre Performance- Selected