Browse all SEM products · Shop more Coatings & Primers
SEM
SEM 42003 – High-Build Primer Surfacer, Black (16 oz Aerosol)
$24.51
Price Match Guarantee
We Price Match
Found a lower price? We'll match any major distributor or valid online sales channel, including Amazon. Contact us with a link and we'll beat or match the price.
Fast Shipping
Ships Fast
Orders ship same or next business day. Free shipping on orders over $50. Orders under $50 ship for a $10 flat rate. Priority shipping available at checkout for $20.
30-Day Returns
Hassle-free return policy
Expert Support
(818) 554-5810
Same / Next Day
Orders ship fast
Why Buy from RDI
Expert technical support from refinish professionals
Competitive pricing with price match guarantee
Free shipping on orders over $50 — ships same or next business day
Hassle-free 30-day returns on all products
Trusted by body shops and refinish pros nationwide
Product Description
SEM 42003 High-Build Primer Surfacer in Black is a professional aerosol primer surfacer that builds film thickness quickly to fill sand scratches, minor imperfections, and featheredges in automotive collision repair. Provides excellent holdout and a smooth, sandable surface for topcoat application.
Key Features:
- High-Build Formula: Fills sand scratches and minor imperfections in fewer coats.
- Black Color: Ideal under black and dark topcoats.
- Excellent Sandability: Smooth, easy-sanding surface for efficient block sanding.
- 16 oz Aerosol: Convenient for spot repairs and small panel priming.
- Strong Holdout: Prevents topcoat sinking and ensures consistent gloss.
Technical Specifications
| Part Number | 42003 |
| Color | Black |
| Size | 16 oz |
| Weight | 16 oz |
| Application | Spot Repair Priming, Featheredge Filling, Sand Scratch Filling |
| Coverage | Varies by application and surface condition |
| Shelf Life | 2 years from manufacture date |
| Country of Origin | USA |
| SKU | SEM-42003 |
| Brand | SEM |
| Product Type | Primer & Sealer |
Shipping & Returns
Shipping
- Orders ship same or next business day
- Free shipping on all orders over $50
- $10 flat rate shipping on orders under $50
- Priority shipping available for $20
Returns
- 30-day return policy on unused, unopened items
- Contact our support team to initiate a return
- Refund issued within 5 business days of receiving the return
