Features & Benefits
- Ideal for priming automotive metal, aluminum, urethane, and plastics
- Provides high coverage of 11 sq. ft. at 2 mil DFT
- Requires 2-3 medium wet coats
- Has a quick 1-hour dry time
- Flashes between coats in just 5-10 minutes
- Home Page /
- Tools & Home Improvement /
- Paint, Wall Treatments & Supplies /
- Paint & Primer /
- Primer /
- SEM 42003 Black High Build Primer - 16 oz.
0 ratings
Item #:
8945694
SEM 42003 Black High Build Primer - 16 oz.
Item #:
8945694
QAR 141
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Friday, August 28
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
High-Build Primer Surfacer is an elastomeric acrylic coating for priming automotive metal, aluminum, urethane, and plastics.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High-Build Formula
This primer surfacer offers excellent coverage, filling in imperfections to create a smooth base for painting, ensuring professional-looking results and superior adhesion for topcoats.
Convenient Dual-Pack
Sold in a 2-pack, this product provides great value and convenience for larger projects, reducing the need for frequent reordering while ensuring you always have primer on hand.
Quick Drying
With a fast-drying time, this primer allows for rapid project progression, minimizing downtime and enabling you to achieve your desired finish more efficiently without compromising quality.
Product Details
| Brand Name | SEM |
| Paint Type | Regular |
| Specific Uses For Product | Exterior/Interior |
| Surface Recommendation | Metal, Wood |
| Item Form | Aerosol |
| Included Components | 1 |
| Model Name | 42003 |
| Container Type | Can |
| Full Cure Time | 1 Hours |
| Coverage | Not available |
| UPC | 646786420030 |
| Global Trade Identification Number | 00646786420030 |
| Manufacturer | SEM |
| Dry Time In Hours | 1 |
| Part Number | 42003 |
| Model Number | 42003 |
| Item Weight | 16 ounces (453.6 grams) |
| Age Range Description | Adult |
| Special Features | Fast-Drying |
| Is Waterproof | False |
| Water Resistance Level | Water Resistant |
| Size | 16 Ounce (Pack of 1) |
| Item Volume | 12 Fluid Ounces |
| Unit Count | 16.0 Ounce |
| Color | Black |
| Finish Type | Semi-Gloss |
| Color Code | SEM 42003 |
| Brand | SEM |
| Special Feature | Fast-Drying |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
-
Auto Body Shops
Ideal for professionals in auto body repair that require a high-quality primer for perfect surface preparation.
-
DIY Enthusiasts
Great for home improvement enthusiasts tackling painting projects who need a reliable primer for various surfaces.
-
Furniture Renovators
Perfect for those looking to refinish or upcycle furniture, providing a strong base for paint adhesion.
-
Casual Users
Not suitable for occasional users who need a quick, hassle-free solution without extensive surface preparation.
Product Description
SEM 42003 Black High Build Primer - 16 oz.
About This Item
Introducing the SEM 42003 Black High Build Primer - your solution for achieving a flawless automotive finish. This elastomeric acrylic coating is specially formulated to prime various surfaces including metal, aluminum, urethane, and plastics, making it versatile for all your automotive needs. The SEM 42003 Black High Build Primer provides excellent coverage, allowing you to achieve professional-looking results with ease.
With a coverage of 11 sq. ft. at 2 mil DFT (dry film thickness), you can trust that this primer will go a long way, saving you time and money.
Applying this primer is a breeze, thanks to the easy-to-use aerosol can packaging. Simply spray on the desired surface, and let it work its magic. With a dry time of only 1 hour, you can quickly move on to the next step of your automotive project.
The SEM 42003 Black High Build Primer is designed to be used in 2-3 medium wet coats, ensuring a smooth and even finish. The flash time of 5-10 minutes between coats allows for efficient application, so you can complete your project in no time. Whether you're a professional or a DIY enthusiast, the SEM 42003 Black High Build Primer is a must-have in your automotive arsenal.
Its high-quality formula and reliable performance make it a go-to choice for achieving professional results. Don't settle for anything less than perfection - choose SEM, the industry-leading brand trusted by professionals worldwide. Revolutionize your automotive projects with the SEM 42003 Black High Build Primer.
Order now and experience the difference it makes in achieving a showroom-worthy finish.
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is SEM White High-Build Primer Surfacer used for?
Answer: SEM White High-Build Primer Surfacer is primarily used for providing an even and smooth base for a variety of surfaces, particularly in automotive applications. It fills in minor imperfections and creates a cohesive layer before the application of paint. This primer is ideal for both metal and plastic surfaces, ensuring proper adhesion and enhancing the final finish. It's commonly used by professionals and DIY enthusiasts during vehicle restoration projects or when refinishing furniture. -
Question:
How do I apply SEM White High-Build Primer Surfacer?
Answer: To apply SEM White High-Build Primer Surfacer, start by shaking the can well to ensure proper mixing. Then, spray from a distance of about 8-10 inches, applying light, even coats. Allow each coat to dry before applying the next one, which can help build up the thickness. This method not only ensures a smooth, even application but also reduces the risk of runs or drips. It's typically recommended for use in a well-ventilated area for safety and optimal results. -
Question:
Is SEM White High-Build Primer Surfacer suitable for plastic surfaces?
Answer: Yes, SEM White High-Build Primer Surfacer is specifically formulated to be compatible with plastic surfaces, making it a versatile choice for numerous applications. This primer adheres remarkably well to plastics, offering excellent bonding and durability. Users often find it beneficial for automotive parts and household projects that involve plastic components, as it prepares these surfaces for better paint adhesion and longevity of the finish. -
Question:
Can SEM White High-Build Primer Surfacer be sanded?
Answer: Yes, after the primer has fully cured, it can be sanded to achieve a perfectly smooth surface. Sanding down the primer helps in leveling imperfections, if any, and prepares it for the topcoat of paint. It’s advisable to use fine-grit sandpaper and to be gentle to avoid damaging the underlying layer. This technique is especially useful for automotive refinishing, where a flawless base is crucial for achieving a high-quality paint finish. -
Question:
How does SEM White High-Build Primer Surfacer compare to others on the market?
Answer: SEM White High-Build Primer Surfacer is known for its superior coverage, ease of application, and strong adhesion properties compared to many other primers. What sets it apart is its high-build capabilities, allowing users to fill gaps and imperfections more effectively. This product is favored by professionals because it provides a solid foundation for automotive finishes, ensuring longevity and durability. Many users report higher satisfaction when switching from other brands due to its performance. -
Question:
What surfaces can I use SEM White High-Build Primer Surfacer on?
Answer: SEM White High-Build Primer Surfacer can be used on a variety of surfaces, including metal, plastics, fiberglass, and wood. Its versatility makes it ideal for automotive applications, such as body panels and bumpers, as well as household objects like furniture. By ensuring a proper surface preparation, this primer enhances paint adhesion, thus significantly improving the longevity and quality of the topcoat finishes. -
Question:
How long does it take SEM White High-Build Primer Surfacer to dry?
Answer: Typically, SEM White High-Build Primer Surfacer dries to the touch within 30 minutes, allowing for quick and efficient multi-coat applications. For full curing, it is generally advisable to wait for about 24 hours. This reasonably fast drying time makes it suitable for rapid projects, while still providing the necessary durability needed for long-lasting finishes. Users appreciate this feature when working under tight schedules or during intensive automotive refinishing tasks. -
Question:
Is SEM White High-Build Primer Surfacer toxic?
Answer: Like many aerosol products, SEM White High-Build Primer Surfacer contains chemicals that can be harmful if inhaled or ingested. It's vital to use it in a well-ventilated area and wear appropriate protective gear, such as a mask and gloves, to minimize inhalation and skin exposure. By following safety precautions, users can ensure a safer experience while benefiting from its performance advantages in various applications. -
Question:
Can I use SEM White High-Build Primer Surfacer outdoors?
Answer: Yes, SEM White High-Build Primer Surfacer can be used outdoors, provided the conditions are appropriate. Ensure that you apply it in dry weather, avoiding direct sunlight and high humidity, as these can impede optimal curing and bonding. Outdoor application is common among users who are working on automotive projects or outdoor furniture, as it allows for proper ventilation and faster drying times. -
Question:
Where can I buy SEM White High-Build Primer Surfacer 16 oz. 2Pack?
Answer: You can buy SEM White High-Build Primer Surfacer 16 oz. 2Pack from Ubuy in Qatar. Ubuy offers a convenient online shopping experience, making it easy to find and order this product along with other automotive supplies. With a user-friendly interface and multiple shipping options, Ubuy provides a hassle-free way to enhance your projects with high-quality products.
SEM Primer 42003 Editorial Review
The SEM 42003 Black High Build Primer is highly regarded by customers for its filling properties and ability to eliminate imperfections. Users have reported applying multiple coats of this primer and achieving a smooth and flawless finish. It is particularly popular among guitar finishers, who have found it to be their go-to choice for priming guitars. However, it is important to note that a wood sealer is recommended when using this primer on guitars. The primer is also praised for its ability to fill in small gaps and highlight high and low spots in bodywork. It is Considered a valuable tool for achieving a flawless bodywork finish. However, it is emphasized that proper preparation work is crucial for successful application. On the downside, some users have reported issues with nozzle leaks and splattering, which resulted in a messy painting experience. Additionally, there are a few negative reviews mentioning that the primer left an uneven surface finish, developed fuzzes, and ruined expensive material. One reviewer even stated that the product should be avoided for automotive use. Overall, the SEM 42003 Black High Build Primer is highly recommended for its filling properties and ability to create a smooth and flawless finish, especially for guitar finishing and bodywork. However, users should be cautious of potential issues with nozzle leaks and uneven surface finishes.
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Pros
- Excellent filling properties
- Smooth and flawless finish
- Highlights high and low spots in bodywork
Cons
- Nozzle leaks and splatters reported
Platform Trust & Buyer Confidence
DA
Dhoha
Verified buyer
“Was looking for chromatography filters and managed to find them and receive them in a short period of time. Great experience”
22 January 2026 · via Trustpilot
PP
Pretty
Verified buyer
“It was timely”
4 July 2026 · via Trustpilot
HA
hamza
Verified buyer
“Timely delivery and transparency”
19 February 2026 · via Trustpilot
MF
Mayerlyn
Verified buyer
“Excelente servicio y hasta la puerta de casa ??”
14 February 2026 · via Trustpilot
LR
Leon
Verified buyer
“The delivery time exceeded my expectations. The product was securely packaged.”
20-Jul-26 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
QAR 141
Order now and get it around Friday, August 28
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.