Big Sky EZ603A-G Urethane Primer, 1 gal, Black, 534 g/L VOC
EZ-Build™ EZ603A™ (Black) is a quality two-component urethane primer-surfacer that offers quick build for filling repair areas. This primer-surfacer features fast dry times with easier sanding, while maintaining very good color hold out and gloss retention.
Why Pros Choose Montana MON
- Good color holdout
- Good adhesion
- High quality quick build
Compatibility
Compatible paint systems: Urethane.
Specifications
| Part No. | EZ603A-G |
|---|---|
| Product Line | MON |
| MFR Model | EZ603A-G |
| Standard/Approvals | California Prop65 Warning: Cancer and Reproductive Harm |
| Manufacturer | Montana |
| UPC | 842027102172 |
| Brand | Montana Big Skyâ„¢ |
| Maximum Sale Quantity | 4 |
| Maximum Sale Day | 7 |
| Rubberized | No |
| Color | Black |
| Form | Liquid |
| Container Size (gal) | 1 |
| Mixing Ratio | 4:01:01 |
About Montana
Montana is a trusted manufacturer of professional auto body and refinish products used by collision repair shops and restoration specialists across North America.
Frequently Asked Questions
What size does Montana MON come in?
This listing ships Montana MON in a 1 (GL) container. Check the autofxmart catalog for other sizes and bulk pricing.
What is the mix ratio for Montana MON?
Montana MON uses a mix ratio of 4:01:01. Always measure activators and reducers accurately to maintain film properties and pot life — deviating from the ratio can cause adhesion or curing problems.
How fast does autofxmart ship Montana MON?
Most in-stock orders for Montana MON ship the same or next business day from our US warehouse. Expedited options are available at checkout. Freight-class items may require an additional 1–2 days for carrier pickup.
Is this Montana product genuine?
Yes. autofxmart is an authorized distributor of Montana products. Every unit is factory-fresh, sealed, and backed by the manufacturer's standard warranty. If you have a concern, contact support@autofxmart.com and we will make it right.
What is the manufacturer part number (MPN) for Montana MON?
The MPN for Montana MON is EZ603A-G. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
Documents & Safety
- Safety Data Sheet (SDS)
- montanabigsky_ez317g_catalog.pdf
- montanabigsky_ez601ag_specification_sheet.pdf
Why Buy from autofxmart
- Authorized distributor — authentic, factory-fresh stock.
- Fast US shipping — most orders ship within 1 business day.
- 30-day returns — buy with confidence.
- Pro-shop pricing — bulk discounts available on request.
- Expert support — questions? Email us at support@autofxmart.com.