Eastwood Gray 4:1 Urethane Primer and Activator

Item #13676ZP Gray Urethane Primer

Eastwood Gray 4:1 Urethane Primer and Activator
2-component gray surfacer designed for overall jobs
* Both Primer and Catalyst are required for a 4:1 mix

Eastwood 2K Urethane Primer Gray- Gallon 4:1

Item #50240ZP

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Eastwood 2K 4:1 Urethane Primer Activator Quart

Item #50241ZP

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Quantity: close

In stock

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Eastwood Urethane primer is a two-component gray surfacer designed for overall jobs.

  • Mixes 4:1 with 50241ZP Activator
  • Fills well and builds quickly
  • Dries fast and easy to sand
  • Apply over epoxy primer, body filler, existing finishes
  • Approximate Coverage Per Gallon: 140 SQ FT
  • Maximum operating temperature: 150 Fahrenheit
  • Made in the USA

It fills well, sands easily and provides excellent color holdout for all top coats. Mixes 4:1 with 50241 ZP catalyst. May be applied over Eastwood Epoxy primers, old paint, & body fillers. Ideal for block sanding in 3-4 hrs after application. When primer is mixed 4:1 with activator it makes 5 spray-able quarts. Primer is VOC 4.8 lbs per gallon.

This product can not be shipped to California



After shaking/stirring primer, thoroughly mix four parts 2K Urethane Primer Sur - facer with one part Urethane Primer Activator


To reduce film build, 4:1 mixture may be cut by up to 20% with a urethane-grade reducer or other appropriate solvent product. Doing this may also improve the flow and leveling of primer. Eastwood suggests using a Zero-VOC reducer to avoid potential compliance issues. Use caution in mixing materials as epoxy primer may begin to gel after approximately two hours (at 70 °F).

HVLP Gun Fluid Tip 1.2-1.6 mm Spray Pressure 25-30 psi
Conventional Gravity Fluid Tip 1.4-1.6 mm Spray Pressure 40-50 psi
Conventional Siphon Fluid Tip: 1.4-1.8 mm Spray Pressure 40-50 psi

Eastwood 2K Urethane Primer Surfacer should be applied in two medium wet coats, with a 10-15 minute flash period between each (at 70 °F). Typically, two coats is enough to achieve the desired 2 mil. dry film thickness, though more material may be applied as needed.

Urethane Primer Surfacer may be topcoated after approximately 30 minutes, or up to 18 hours (at 70 °F with sufficient cross-ventilation), with no additional prep required. After 18 hour recoat window, primer MUST be sanded prior to topcoat application for adhesion purposes.

May be wet sanded after 2-3 hours, or block sanded (dry) after 3-4 hours.


Use in well ventilated area Always wear eye, skin and repiratory protection Consult MSDS and Product Data Sheet for specific saefty instructions

Eastwood Offers Free Lifetime Technical Support

Click here for product SDS information

Attention California Residents - Proposition 65

Proposition 65 Warning WARNING - Cancer and Reproductive Harm - www.P65Warnings.ca.gov


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