Gates 31306 Radiator Cap

Brand Gates 31306
Type Standard cap
Cap Depth 1.41
Filler Neck Inside Diameter 1.61
Filler Neck Inside Diameter 41
Filler Neck Outside Diameter 2.13
Filler Neck Outside Diameter 54
Coolant Recovery System Open system
Pressure Rating 7
9822 1
9822 25
9833 2.33
Coolant Recovery System Open system
Filler Neck Depth (in) 1
Filler Neck Depth (mm) 25
OE Comparison Rating Oe performance
Pressure Rating (psi) 7
SAE Pressure Range (psi) 6-8
Shell Diameter (in) 2.33
Type Standard cap
Fits

OE-type replacement. Manufactured to meet or exceed OEM specifications in form, fit, and function.

Corrosion-resistant construction. Heavy-gauge metal or high-quality plastic helps deliver long service life.

Pressure control. Maintains accurate 7 psi cooling-system pressure.

Cross-references Anchor 10206, BBB Industries 11206 and Dorman - HELP 46004 for the same application. See all 30.

$17.35Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $17.35
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Gates OE Type Radiator Cap 31306

The Gates OE Type Radiator Cap 31306 is a standard radiator pressure cap built for accurate pressure control in open cooling systems. It uses corrosion-resistant metal or high-quality plastic construction, depending on application, to support long service life and consistent sealing performance.

For drivers searching for an OE-style radiator cap for Honda Civic, Toyota Corolla, or similar passenger vehicles, this Gates 31306 cap is engineered to meet or exceed OEM specifications in form, fit, and function.

Key Features

  • Standard radiator cap design for open coolant recovery systems
  • Pressure rating: 7 psi, with SAE pressure range of 6-8 psi
  • OE Performance rating for factory-style operation
  • Filler neck inside diameter: 1.61 in. (41 mm)
  • Filler neck outside diameter: 2.13 in. (54 mm)
  • Filler neck depth: 1 in. (25 mm)
  • Shell diameter: 2.33 in.
  • Cap depth: 1.41 in.

Product Details

Gates OE Type Radiator Cap 31306 is built to maintain the correct pressure level in the cooling system, helping the radiator operate within its intended range. The cap’s OE-style dimensions and 7 psi rating make it a direct-fit choice for vehicles that specify this pressure and neck size. Gates designs this radiator cap to meet or exceed OEM specifications, with materials selected for corrosion resistance and dependable sealing.

This part cross-references Dorman - HELP 46004 and Wix 33003 for the same application. If you are replacing a worn radiator cap on a Honda Civic, Toyota Corolla, or another vehicle using the same OE-style neck dimensions, the Gates 31306 offers a straightforward replacement path.

What This Radiator Cap Helps Address

  • Coolant loss caused by a weak or failing cap seal
  • Pressure irregularities in the radiator system
  • Overflow or venting concerns from an incorrect pressure rating
  • Cooling system service issues tied to worn cap components
  • Fitment problems when replacing an OE-style 7 psi radiator cap

Installation Notes and Tips

Verify the filler neck dimensions, pressure rating, and coolant recovery system type before installation. This Gates 31306 is specified for an open system and should be matched to the vehicle’s radiator neck depth and diameter for proper sealing. Inspect the radiator neck and sealing surface for damage or corrosion before installing the new cap.

For fitment-based searches, this part is commonly referenced for vehicles such as Honda Civic and Toyota Corolla when the cooling system calls for a 7 psi OE-style radiator cap. Confirm the application by matching the original cap specifications.

Quality Assurance

Gates manufactures this radiator cap to meet or exceed OEM specifications in function, form, and fit. The construction is designed for corrosion resistance and accurate pressure control, supporting consistent cooling system performance in everyday service.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 30 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 10206BBB Industries — 11206Dorman - HELP — 46004Gates — 31306Standard Ignition — RC-3Standard Ignition — RC-6Wix — 3300312R3153-1062977-505133-8011703-1411255300850797AT29054B2AZ 8100 EBC-6BR-6DR-6ER-6M-6P-6R-6RR-6RS-6T-6U95-4128WA-6WC-6WR-6