Description
The swirl pot is the top choice for P13 (H22/H23/F20B/F22A/F23A) cylinder head cooling system upgrades! Best solution for systems with tucked radiators, a radiator without a cap bung, or situations where you want a higher fill point to aid in burping the sometimes troublesome cooling system.
The swirl pot starts with a beautifully machined 6061-T6 flange that incorporates a 3D tapered exit port for a seamless transition to 1.25″ tubing. The backside of the flange has an OEM o-ring groove for a positive seal against the cylinder head. The outlet can be configured for standard hose (1.25″ OD), -16, or -20 male flare.
The space between the swirl pot and the flange makes the lower mounting bolt a bit challenging to reach without the right tools. If you don’t already own one, you may want to add a 6mm Stubby L-Key.
NOTE: The cap bung has a 1/16″ NPT port for connection to an overflow and uses early model Honda radiator caps, such as an 88′-91′ Civic/ CRX or 90′-93′ Integra. If you are using AN lines, I recommend designing the upper radiator hose with some droop/give so the engine’s movement does not push/pull on the radiator and fatigue any parts.
The swirl pot includes two socket head bolts and an o-ring. The cylinder is welded so that it sits level when bolted to an engine with a 10.5° back lean (OEM) or a 4.2° forward lean (QSD H2B).
Additional information
| Weight | 3 lbs |
|---|---|
| Dimensions | 10 × 8 × 8 in |



