Engine & Transmission
Whether you’re replacing a worn-out motor, upgrading your vehicle, or looking for a reliable transmission, we deliver high-performance auto parts right to your door.
Deals Of The Day
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Uncategorized
2006 Chevy Silverado 5.3L LM7 LS Engine & 4L60E Transmission Pullout – 4x2
$3,600.00
$4,500.00In stock
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Engines
LS CHEVY LS 5.3 LS 510 HP COMPLETE CRATE ENGINE PROBUILT LQ LS2 LS6 6.2 Ls3 LSX
$7,999.00
$8,900.00In stock
Top 20 Best Seller
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2006 Chevy Silverado 5.3L LM7 LS Engine & 4L60E Transmission Pullout – 4x2
$3,600.00$4,500.00 -
2003–2005 Infiniti FX45 4.5L V8 Engine – 71K Miles
$1,550.00$1,900.00
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LS CHEVY LS 5.3L 510HP 6.2L
$3,000.00 -
2009 C6 Corvette LS3 Engine
$2,500.00 -
GM LS3 6.2L Built Long Block Engine
$3,500.00 -
Engine 6.2L VIN 6 8th Digit Opt LT4
$4,500.00
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$1,550.00
$1,900.00
Why Choose Us?

At HRT Auto, we understand that choosing the right engine or transmission is more than just a purchase, it’s an investment in reliability, performance, and peace of mind. Here’s why customers trust us:
Quality You Can Depend On
Every engine and transmission we sell is thoroughly inspected and tested at operating temperature to ensure performance, durability, and a leak-free guarantee.
Expertly Prepared
Our units come ready with a standalone wiring harness and pre-flashed PCM for smooth installation, saving you time, money, and frustration.
Wide Selection
From gas to diesel, stock replacements to performance builds, we carry a full range of engines and transmissions to fit your needs.
Customer Support That Cares
Our knowledgeable team is here to guide you through selection, shipping, and installation so you can hit the road with confidence.
Nationwide Shipping
No matter where you are, we deliver engines and transmissions directly to your door or shop, quickly and securely.
Complete Wiring Harness
Each engine comes with a new standalone wiring harness, eliminating the need for reworked or problematic wiring.
PCM Flashing
Our PCMs are flashed to remove error codes and configure electric fans, ensuring your engine works perfectly out of the box.
Tested for Reliability
Every engine is tested at operating temperature to guarantee a leak-free and reliable unit you can trust.
Ready to Go
Once tested and prepared, your engine is ready to install, letting you get on the road faster and with confidence.