InfoAutoparts is an independent service operated by Rock Autocare LLC and has no connection with Rock Auto or any other companies.
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We source quality parts from all major automotive brands across our nationwide network
Acura
Audi
BMW
Buick
Cadillac
Chevrolet
Chrysler
Cummins
Fiat
Ford
Freightliner Trucks
GMC
Honda
Hummer
Hyundai
Infiniti
Isuzu
Jaguar
Jeep
Kia
Lexus
Lincoln
Mazda
Mercedes-Benz
Mercury
Nissan
Oldsmobile
Pontiac
Porsche
Ram
Saturn
Subaru
Suzuki
Tesla
Toyota
Volvo
Acura
Audi
BMW
Buick
Cadillac
Chevrolet
Chrysler
Cummins
Fiat
Ford
Freightliner Trucks
GMC
Honda
Hummer
Hyundai
Infiniti
Isuzu
Jaguar
Jeep
Kia
Lexus
Lincoln
Mazda
Mercedes-Benz
Mercury
Nissan
Oldsmobile
Pontiac
Porsche
Ram
Saturn
Subaru
Suzuki
Tesla
Toyota
Volvo
Acura
Audi
BMW
Buick
Cadillac
Chevrolet
Chrysler
Cummins
Fiat
Ford
Freightliner Trucks
GMC
Honda
Hummer
Hyundai
Infiniti
Isuzu
Jaguar
Jeep
Kia
Lexus
Lincoln
Mazda
Mercedes-Benz
Mercury
Nissan
Oldsmobile
Pontiac
Porsche
Ram
Saturn
Subaru
Suzuki
Tesla
Toyota
Volvo
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Verified inventory with warranty-backed coverage and documented testing
Why Choose InfoAutoParts
Your trusted partner for quality used engines and used transmissions
Quality Assurance
Every used engine and used transmission is thoroughly inspected to meet OEM quality and performance standards, ensuring you receive reliable, durable components you can trust with confidence.
Competitive Pricing
High-quality used engines, used transmissions, and aftermarket parts at budget-friendly prices. We deliver exceptional value without compromising performance.
Readily Available
Extensive inventory of used engines, used transmissions, and auto parts makes it easy to find components, even for older vehicles, with quick availability and minimal wait time.
Customer Support
Friendly experts ready to help with used engines, used transmissions, selection, orders, and questions ensuring a smooth, stress-free buying experience every time.
Fast Shipping
Orders for used engines, used transmissions, and auto parts are processed quickly for prompt nationwide delivery, so you get your parts fast and get back on the road sooner.
Warranty Included
All used engines, used transmissions, and auto parts come with warranty protection, plus hassle-free returns and replacements for complete peace of mind.
Used Engines & Transmissions — Reliable, Tested & Ready to Install
InfoAutoParts ( by Rock AutoCare) provides dependable used engines and used transmissions for cars, trucks, SUVs, and commercial vehicles across the United States. Each unit is carefully inspected to ensure performance, durability, and proper fitment delivering quality parts at prices that make sense.
Quality Parts at Competitive Prices
Purchasing used engines and used transmissions is a smart alternative to buying new or rebuilding. It significantly reduces repair costs while maintaining OEM reliability and factory compatibility.
Every engine & transmission is verified for:
- Visible damage and major mechanical defects
- Proper mechanical condition and functionality
- Compatibility with specific vehicle applications
- Mileage verification (when available)
No hidden fees — only transparent pricing and clear warranty information on every order.
What Our Customers Say
Real feedback on parts quality, service, and delivery
Great pricing and quality parts. Customer service stayed responsive until delivery arrived.;
Friendly and knowledgeable team made the entire quote-to-installation process quick and stress-free.;
Transmission arrived exactly on time, well packaged, and performs perfectly in my car.;
Professional and honest service with reliable parts. Highly recommend InfoAutoParts ( by Rock AutoCare).;
Support team stayed transparent and helpful throughout the process. Excellent service overall.;
Engine arrived clean and well tested. Installation was smooth and hassle-free.;
Quick quote, fair pricing, and reliable delivery. Very satisfied with service.;
Frequently Asked Questions
Can't find what you're looking for? Our team is happy to help.
Installing a used engine should always be done by a certified mechanic. The process includes removing the old engine, inspecting mounts and components, transferring necessary parts, installing the replacement engine, reconnecting wiring and hoses, adding fresh fluids, and performing system checks before starting. Proper torque specifications and manufacturer guidelines must be followed to ensure safe operation.
Used transmission installation involves removing the existing unit, inspecting the torque converter and mounts, installing the replacement transmission, reconnecting the driveshaft, wiring, and cooling lines, refilling with the correct transmission fluid, and testing for smooth shifting. Professional installation is strongly recommended to avoid damage and ensure correct alignment.
Compatibility is verified using your Vehicle Identification Number (VIN), year, make, model, engine size, and transmission type. Providing accurate vehicle details ensures the correct fit and prevents installation issues.
Most quality used engines and transmissions include warranty coverage. Warranty terms may vary depending on the part and mileage. Always review warranty details before purchase for complete peace of mind.
Still have questions? Contact our team →
Need More Help?
Our auto parts specialists are ready to help you find the right engine or transmission for your vehicle.