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Earl's - CNC-Machined Radiator Filler Neck (1.5″ Opening) - 166015ERL
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Earl's - CNC-Machined Radiator Filler Neck (1.5″ Opening) - 166015ERL

Earls
ERL166015ERL
Out of stock
Radiator Filler Neck
$59.95
The Earl’s 166015ERL CNC-machined Radiator Filler Neck offers a premium coolant-system upgrade for performance vehicles. Built...
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Earl's - CNC-Machined Radiator Filler Neck (1.5″ Opening) - 166015ERL
Description

The Earl’s 166015ERL CNC-machined Radiator Filler Neck offers a premium coolant-system upgrade for performance vehicles. Built from 6061-T6 billet aluminum and finished in its natural machined appearance, this filler neck features a 1.50″ opening and includes an integral ¼″ barb overflow fitting for secure hose attachment. Designed for welding into custom radiator setups or aftermarket cooling systems, it provides high-quality fitment and strong durability under repeated thermal cycling. Whether you’re building a street machine, track car or custom swap, this filler neck delivers both function and professional appearance.

Recommended Radiator Caps: 

  • Stant Racing # 10381, or 10382 (Lever Style)
  • Stant Racing # 10391, 10392, 10393, or 10394 (w/o Lever)
  • Mr Gasket # 2481 or Domestic ThermoCap

Features:

  • 1.50″ opening: designed for larger capacity radiator or performance cooling system

  • Machined from 6061-T6 billet aluminum for strength, durability and thermal stability

  • Includes ¼″ barb overflow tube for convenient hose connection

  • Natural finish for a clean, professional appearance in visible engine bay areas

  • Designed for welding mount-installation (ready to be welded into custom radiator or filler tank)

  • Compatible with performance cooling systems and custom radiator builds

Specification:

  • Adapter Type: Radiator Filler Neck
  • Brand: Earl's
  • Category: Plumbing AN Fittings and Hose
  • Component Type: Radiator Filler Neck
  • Emission Code: 5
  • Finish: Natural
  • Material: 6061-T6 Aluminum
  • Product Type: Fuel System Components
  • Style: Weld-on
  • UPC: 021432271011
  • Part Number: 166015ERL
  • length in inches: 5.15
  • width in inches: 1.55
  • height in inches: 3.6
  • weight in pounds: 0.07
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After this time, we cannot be held responsible for lost or damaged items.

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Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

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