Promar Precision Engines, based in Paterson, New Jersey, has over 45 years of experience as engine rebuilders and is committed to the highest quality products and services offered in the industry.
Promar Precision Engines is a professional engine remanufacturing company serving customers worldwide with a complete line of rebuilt engines / remanufactured engines, cylinder heads, crankshafts, engine restoration services and engine components for Automobile & Light Truck, Classic Automobile, Diesel (Light Duty), High Performance and Marine (Boats)
Promar stands apart by offering unparalleled expertise in remanufacturing. Our team combines cutting edge technology with meticulous craftsmanship to ensure every engine meets or exceeds original performance standards. Whether you're restoring a classic car or need reliable marine engine repair, we’re here to deliver results you can trust.
At Promar we take pride in serving a diverse range of clients, from enthusiasts preserving vintage vehicles to professionals seeking performance upgrades. Our attention to detail and commitment to excellence have earned us a loyal customer base across multiple industries.
Promar Engines is proud to be BBB Accredited with an A+ rating, reflecting our commitment to trust and integrity. We offer flexible payment options including PayPal, allowing you to buy now and pay later with confidence. Your satisfaction and convenience are our top priorities!
Shop securely with PayPal and enjoy safe, convenient transactions every time.
Learn MoreWe meet the highest standards for trust ensuring peace of mind for every customer.
Learn MoreEnjoy flexible financing options with payment plans that will fit your budget.
Learn MoreOur remanufacturing process ensures that each component meets the highest standards. From thorough inspections and precision machining to rigorous testing, we restore engine blocks, cylinder heads, and crankshafts to like new condition for dependable performance
Our remanufacturing process for engine blocks includes detailed inspections, precision machining, and rigorous testing. Each block is restored to like-new condition, meeting or exceeding OEM standards for reliability.
Learn MoreOur remanufacturing of cylinder heads includes comprehensive cleaning, crack detection, and machining. We install plugs, check spring pressure, and add seals, ensuring each head performs reliably and efficiently.
Learn MoreOur crankshaft remanufacturing process includes detailed inspections, grinding, and polishing to restore the crankshafts to precise specifications. This ensures a smooth and efficient engine operation with maximum durability.
Learn MoreFor your convenience, here's a quick reference to important customer service details. Learn more about our payment options, sales tax policies, business hours, and other essential information to help guide your experience with Promar Engines.
We accept Business Checks, Certified Bank Checks, Cash, Money Orders, Paypal, Zelle, Apple Pay, Google Pay, Venmo, Wire Transfers and All Major Credit Cards. All funds must be in United States currency (US Dollars).
Please use the form below to calculate shipping cost for your area.
Delivery of the engine by truck equipped with a lift gate is $75 each way and residential delivery is an additional $100 each way. Those services are free for New Jersey customers.
Shipping options are also available for customers outside of the United States. Please email sales@promarengine.com for more details.
Select your destination to get shipping cost.
All orders shipped within New Jersey will have 6.625% New Jersey state sales tax added.
All orders shipped within New York, Pennsylvania, Florida, North Carolina, South Carolina or Illinois will have your current county sales tax added. We do not we collect sales tax in the other states.
Our normal business hours are Monday-Friday 8am-5pm EST. We can be reached by phone @ 1-800-422-6022 or by email info@promarengine.com
All engines, cylinder heads, and crankshafts are sold on an exchange basis. While there is no core deposit required, all cores must be returned. By purchasing our product you agree to have the appropriate, rebuildable core ready for pickup or paid for in full within 30 days. After 30 days your warranty will be voided and you will be charged market value for your core. Please call for immediate pickup.
For more information please feel free to call toll free Monday-Friday 8am-5pm EST@ 1-800-422-6022 or email us info@promarengine.com
Discover the difference with Promar Engines. We take pride in delivering top notch services to our customers. Don't just take our word for it hear what they have to say about their experiences with us! Our commitment to quality and customer satisfaction speaks through their success stories.
Excellent, all threads needing repairs were done, engine completely clean. Fast turn around and shipping, engine shipping and packed super
2 months ago
No issues what so ever, quick build time for a 6.2 with AFM delete. Great job, I highly recommend.
2 months ago
Promar was very professional and the engine that I purchased has been great. Highly recommend this business.
3 months ago
Great service, quick delivery no issues
3 months ago
I ordered the supercharger ready 4.6 for a 2001 Saleen with a Kenne bell charger. The engine is handling the boost and no issues whatsoever. I will definitely give Promar my business in the future.
3 months ago
I could not. Be happier, the motor started up And had been running smooth ever since. I was happy that the motor was all painted cadillac blue. No oil leaks.. Thank. You for a great job.Dan
3 months ago
We purchased a remanufactured 2020 L83 5.3 AFM delete. Communication with customer service was superb. The instructions were clear enough, we documented everything they required replacing and then went beyond t...
3 months ago
Great company great products I get all my customers engines through promar . GET IT RIGHT AUTOMOTIVE appreciates you guys
3 months ago
This is the 3rd rebuilt engine (for three different Jeeps) we have purchased from them in the past 9 years. They have excellent quality and great customer service. We had two shipped to our home in Arizona, a...
4 months ago
I had a great experience with Promar. I brought a 1963 Porsche 1600N engine to be rebuilt. He disassembled, mic’d all components, put in new bearings, new pistons and cylinders and rebuilt my heads. Etc…. ...
5 months ago
Ordered a new I-5 3.7L for my H3 Hummer, and it took a while to get, but well worth the wait. Runs like new. The mechanic whom installed it said they did a real nice job on the reman. Thanks !
6 months ago
Had a great experience in having my engine rebuilt! I didn’t know much about what I was doing but Mark and Kevin got my engine squared away! 5 years later it’s still running strong
6 months ago
My 2003 Jeep Grand Cherokee Overland with 240,000 miles needed a new engine. I asked around and chose Promar based on their reputation. Price was right, shipping was great, install went without a hitch, and t...
6 months ago
Have been doing business with Promar for years. They are a great company to deal with. Always awesome work!!
6 months ago
These guys are the ultimate professionals. They were on time with the delivery of my remanufactured 7.3 IDI. The engine has been on for two months now and it runs great, has awesome e oil pressure and power and...
8 months ago
Excellent job. To my specifications. Very good to work with.
8 months ago
Great company! Bought an engine from them and love it!
10 months ago
As a 46 year GM dealership technician, I was a little hesitant about ordering a rebuilt northstar engine from anyone. I'm truly impressed by the quality of their work, from the shipping process, including a ...
11 months ago
The motor seems to run great. Interaction with sales was ok but the engine was delivered with gaskets and some sheet metal I was not expecting so I had to return some of the parts I had purchased. My only call ...
1 year ago
Used to work there as technician quality is excellent. Plus they are local and you can talk to the owner. My only criticism is I wish they would make more suggestions when they don’t have exactly what you are...
1 year ago
Get the inside scoop on the latest developments at Promar Engines. From groundbreaking innovations to important announcements, we keep you updated on everything happening within our company and the engine remanufacturing industry.
Posted on March 17, 2025 by promarengine
We’re always looking for ways to make shopping with us easier and more convenient. That’s why we’re thrilled to announce that we now accept Zelle as a payment method—both for purchases made over the phone and through our online shopping cart! Continue reading
Posted on February 26, 2025 by promarengine
If you’re in the market for a GM 4.3L EcoTec3 V6 engine and want to avoid the common problems associated with Active Fuel Management (AFM), we’ve got great news! We are now offering GM 4.3L EcoTec3 LV3 engines with AFM deleted, giving you a more reliable and Continue reading
Posted on August 13, 2024 by promarengine
For Ram truck enthusiasts and owners, the search for a powerful, reliable engine upgrade just got easier. Promar Engines has recently expanded its lineup to include a 6.4-liter engine specifically designed for Ram trucks from 2014 to 2020. But what makes this engine truly stand out? It’s a non-MDS (Multi-Displacement System) engine that doesn’t require any reprogramming of the trucks computer. Continue reading
Posted on May 21, 2024 by promarengine
We’re excited to announce that we now offer non-AFM (Active Fuel Management) versions of the highly acclaimed GM 5.3 L83 and GM 6.2 L86 engines. This upgrade comes in response to the preferences of Continue reading
Posted on October 02, 2023 by promarengine
For three decades, Promar Engines has been a name synonymous with quality, innovation, and reliability in the automotive industry. As we celebrate our 30th anniversary, we take a moment Continue reading
Promar Engines is proud to be a member of esteemed organizations that set the standards for quality and excellence in the industry. Our memberships reflect our commitment to staying at the forefront of engine remanufacturing and adhering to the highest professional standards.