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  • 21430F990B Nissan CAP ASSY-RADIATOR

21430F990B Nissan CAP ASSY-RADIATOR, Price: 8.94$, Weight: 0.03kg

    • Make Number Name Availability Weight, kg Ship in, Days Price

    Nissan

    21430F990B

    CAP ASSY-RADIATOR

    		 57

    0.03

    2-3

    8.94$
     

    Substitutions

    Make Number Name Availability Weight, kg Processing, days Price  
    Nissan
    21430D999C 
    CAP ASSY-PRESSU
    		2546
    0.035
     Dispatch 24h
    11.02$
     
    Nissan
    21430D999C 
    CAP ASSY-PRESSU
    		2967
    0.035
    2-3
    9.71$
     
    Nissan
    214301P107 
    CAP ASSY-RADIATOR
    		0
    0.023
    -
    8.61$
    		 Not Available
    Nissan
    214301P106 
    CAP ASSY-FILLER
    		0
    0.023
    -
    8.22$
    		 Not Available
    Nissan
    21430D999A 
    CAP ASSY-RADIATOR
    		0
    0.035
    -
    7.83$
    		 Not Available
    Nissan
    21430D991B 
    CAP ASSY-PRESSU
    		0
    0.035
    -
    6.93$
    		 Not Available
    Nissan
    21430D991A 
    CAP ASSY-RADIATOR
    		0
    0.035
    -
    6.88$
    		 Not Available

    Compatibility

    Body StyleEngineMarketModelModel Year FromModel Year ToOptionsDiagram
    WAGONVQ35DEGeneral/Asia (LHD)S5003.200506.2008AREA:MIDDLE AND NEAR EAST View

    Premium Radiator Pressure Cap for Nissan/Infiniti

    This OEM-grade pressure cap locks your cooling system, holds the right pressure, and keeps coolant where it belongs. It stops boil-over, reduces evaporation, and helps the heater work steady. Built with a corrosion-resistant spring, dual relief/vacuum valves, and a high-temp rubber seal for a tight fit. Perfect choice when restoring factory reliability. ❄️

    Why this part is needed

    Correct pressure raises the coolant’s boiling point and protects the engine from overheating. It also routes hot fluid to the overflow bottle and pulls it back as the engine cools. A worn cap ruins this balance and invites costly damage.

    How it works

    A spring-loaded valve holds system pressure (typically around 0.9–1.1 bar). When pressure peaks, it bleeds to the reservoir. As the engine cools, a vacuum valve opens to draw coolant back, preventing air pockets and hose collapse. The primary seal keeps the neck airtight.

    What happens if it’s broken ⚠️

    Signs include coolant smell, white crust at the filler neck, random temp spikes, overflow bottle constantly full, or a collapsed upper hose after shutdown. Driving like this risks overheating, warped heads, and pump cavitation. Replace promptly and only on a cold engine. Twist until fully seated and top the reservoir to the mark. ♨️

    Compatibility

    • FX35
    • FX45