SKU: 89683410351

NISSAN INJECTOR SEAT KIT, 25MM, 4 CYLINDER

Sale price$52.16 Regular price$57.95
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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15

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Description

NISSAN INJECTOR SEAT KIT, 25MM, 4 CYLINDERThese are the same machined aluminum injector seats used in Radium fuel rail kits. They are required when converting an OEM side feed injector to a top feed injector that uses a 14mm lower O ring. They simply "pop" into the intake manifold (1 required per injector). They seal to the machined injector counterbore using the included FKM O ring. The 2 sizes are based on the intake manifold's inside diameter of each injector counterbore. Below are just a

These are the same machined aluminum injector seats used in Radium fuel rail kits. They are required when converting an OEM side feed injector to a top feed injector that uses a 14mm lower O-ring. They simply "pop" into the intake manifold (1 required per injector). They seal to the machined injector counterbore using the included FKM O-ring. The 2 sizes are based on the intake manifold's inside diameter of each injector counterbore. Below are just a few examples of some popular Nissan engines.

30mm = KA24DE S13/S14, SR20DET S13
25mm = RB25DET, SR20DET S14/S15, SR20VE FWD

All 30mm injector seats are black anodized. All 25mm injector seats (shown below) are Radium green anodized.

The injector seats are CNC machined with a common 14mm bore for the lower injector O-ring.

FEATURES

-CNC machined 6061 aluminum
-Bright dipped anodized
-Laser etched logo
-FKM O-rings

INSTALLATION

Thoroughly clean out any dirt or debris found in the intake manifold injector seat bores. Next, lubricate the Radium injector seat O-rings with engine oil. Press the Radium injector seats down firmly into the intake manifold injector ports until fully seated. If necessary, use a small rubber mallet.

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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 89683410351

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Cyndie Sue
Chelsea, US
★★★★★ 5
Part of his Tu Bardh Wilson costume
Size: 5, Color: Grey, Size: 5, Color: Grey
Nice looking vest!
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Reviewed in the United States on April 6, 2026
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Heather
Fort Morgan, US
★★★★★ 4
Size up!
Size: 16, Color: Black
For sizing size up as much as you can. Good quality but sizing wasn’t great.
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Reviewed in the United States on August 1, 2025
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Latrice S.
Bozeman, US
★★★★★ 5
Perfect match and fit!
Size: 16, Color: Navy Blue
It look great on my nephew and matched his pants perfectly!
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Reviewed in the United States on December 3, 2025
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heather
Pawtucket, US
★★★★★ 5
Good fit
Size: 10, Color: Navy Blue
Nice fit
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Reviewed in the United States on November 30, 2025
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Ellen
Birmingham, US
★★★★★ 5
Beautifully made
Size: 4, Color: White
Very nicely made
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Reviewed in the United States on August 18, 2025

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