At New River Transmission, we operate on the belief that your vehicle’s reliability is the backbone of your daily life, which is why “your shift is our business.” We specialize in providing precision diagnostics and high-quality repair services designed to keep your drivetrain performing at its peak, whether you’re tackling a heavy-duty haul or a daily commute. Our team combines technical expertise with a commitment to transparent communication, ensuring that every gear change is smooth and every customer feels confident behind the wheel. We don’t just fix transmissions; we provide the peace of mind that comes from knowing your vehicle is handled by professionals who value your time and safety.
Our Services
Transmission Rebuild
Complete rebuilds for automatic and manual transmissions. All makes and models.
Free Diagnostics
No commitment necessary. Let our experts diagnose your transmission issues at no cost.
Installation
Professional transmission installation by certified technicians. Fast turnaround.
Differential Service
Front and rear differential assembly repair and rebuilds for all vehicle types.
Marine Transmissions
Specialized marine transmission service for boats and watercraft in the Lowcountry.
4WD Transfer Case
4-wheel drive transfer case repair and rebuilds. Sports cars to tractor trailers.
Antique Transmission Restoration
Expert restoration of classic and antique vehicle transmissions. Preserving automotive history with precision craftsmanship.
Trusted Since 2002
Why Choose Us
Family owned and operated — trusted by the Lowcountry
40+
Years Experience
3 year
36,000 Mi Warranty
Free
Diagnostics
John Murphy, owner and master rebuilder, brings almost 40 years of automotive experience and 38 years of experience building transmissions. ASE Certified, ATSG Certified, ATRA Certified, and GM Certified — John can build a transmission blindfolded in under 20 minutes. A USMC Veteran and active community member, John and his team are known as the best in the business.
John Murphy
Owner & Master Rebuilder
Testimonials
What Our Customers Say
Real reviews from real customers
John and his team are the real deal. Had my transmission rebuilt and it runs better than when I bought the truck. Fair price, honest work, and they kept me updated the whole time. Can't recommend them enough.
These guys know transmissions inside and out. John has been doing this for over 30 years and it shows. My car shifts smoother than it ever has. The 3-year warranty gives real peace of mind too.
I was worried about the cost but they gave me a very fair estimate and stuck to it. No surprise charges. Sally in the office was so helpful keeping me informed. A truly honest business.
Ready for Expert Transmission Service?
Free diagnostics — no commitment necessary. Call us today.