Spoon Sports Radiator Cap

Spoon Sports Radiator Cap - 1.35 kgf/cm² (D Type & F Type)

Your radiator cap does more than keep coolant in. It sets the pressure the whole cooling system holds before it vents, and that pressure is what determines your coolant's boiling point. A tired factory cap lets go early, which means coolant starts boiling sooner under load than it should. This Spoon cap raises relief pressure to 1.35 kgf/cm², so the system holds together even when coolant temperature climbs past 100°C. More margin before things get interesting, and the Spoon blue sitting somewhere you see it every time the hood goes up.

D Type Or F Type? Find Your Car Below

Read this before ordering, because it's the whole decision and the split isn't intuitive.

Both types are the same pressure. 1.35 kgf/cm² either way. The only difference is the neck and seal shape, which determines what it physically fits.

And the fitment genuinely doesn't follow a pattern you could guess. An 88-91 Civic takes F while a 92-95 Civic takes D. A 10th gen Civic takes F while an 11th gen takes D. The base Integra takes D while the Integra Type S takes F. There's no shortcut, so find your exact car on the lists below.

Type D Applications

• 1990-1994 Honda Accord
• 1992-2015 Honda Civic (EG, EK, EP3, FG, FB)
• 2022+ Honda Civic Si / Sport / EX (11th gen)
• 1993-1997 Honda Civic del Sol
• 2003-2008 Honda Element
• 2007-2008 Honda Fit
• 2000-2009 Honda S2000 (AP1, AP2)
• 1994-2001 Acura Integra (DC)
• 2002-2006 Acura RSX (DC5)
• 2004-2008 Acura TSX
• 2023+ Acura Integra Base / A-Spec (DE4)

Type F Applications

• 1988-1991 Honda Civic (EF)
• 1988-1991 Honda CRX (EF)
• 1992-2001 Honda Prelude (BB)
• 2016-2021 Honda Civic (10th gen, FC / FK)
• 2017-2021 Honda Civic Type R FK8 (expansion tank)
• 2023+ Honda Civic Type R FL5 (expansion tank)
• 1990-1993 Acura Integra (DA)
• 2024+ Acura Integra Type S (DE5)

Two Fitment Notes Worth Reading

Type R owners: on the FK8 and FL5, Type F is the cap for your expansion tank, not a radiator neck. Those cars run a pressurized expansion tank rather than a traditional capped radiator, so that's where this goes.

Integra owners: your trim determines your cap. The Base and A-Spec (DE4) take Type D. The Type S (DE5) takes Type F. Different chassis codes, different caps, so check which one you've got.

What Higher Pressure Actually Buys You

Worth being clear, because it's easy to expect the wrong thing.

Raising cap pressure raises your coolant's boiling point. That's the whole mechanism. It doesn't increase flow, it doesn't lower your normal operating temperature, and it isn't a thermostat. What it gives you is headroom before the coolant boils, which matters on a track day, in summer traffic, or on a built engine making more heat than the factory planned around.

One honest note: higher pressure only helps a healthy system. A tired hose or an aging radiator that was marginal at 1.1 is going to be less happy at 1.35. That's not a reason to skip it, it's a reason to look over your cooling system while you're in there. If your hoses are original on a twenty-year-old car, they were due anyway.

The Detail You See Every Time

Beyond the function, this is one of those Spoon pieces that earns its place on looks alone. The blue is the brand's racing identity, carried over from the blue and yellow livery Spoon has run on their cars for decades, and it's recognizable across a parking lot without reading a logo. A buffed Spoon cap sitting in your bay is the kind of detail that signals somebody who knows the platform has been in there.

Installing It

Simple job, one rule: install on a cool engine. Opening a hot pressurized cooling system is how people get burned, and it isn't worth the few minutes saved.

While you're there, take a look at the neck or tank gasket and check your overflow bottle. Both are cheap and both affect whether the system actually holds the pressure you just bought.

Who Should Run This Cap

This is for anyone who takes their Honda somewhere hot. Track days, canyon runs in summer, autocross, or a built engine that generates more heat than stock ever did. You're buying boiling margin, which is exactly the kind of insurance you appreciate on the third session of the day. Find your car on the list, pick the right type, and install it cold.

Relief pressure: 1.35 kgf/cm² (both types). Part numbers: ALL-19045-000 (D Type), ALL-19045-001 (F Type). Fitment: see the application lists above, D and F are not interchangeable. Finish: buffed with Spoon logo. Note: install on a cool engine. On FK8 and FL5, Type F fits the expansion tank.