Does a Transmission Replacement Include a Torque Converter?

Usually, yes for automatics: most remanufactured automatic transmissions are sold with a matched torque converter and require installing it to keep the warranty; used/salvage units and some in-house rebuilds may not include it, and manual or dual‑clutch transmissions don’t use a torque converter at all. Below is what’s typically included, how to read an estimate, and when you should insist on a new or reman converter.

What “transmission replacement” usually includes

In the repair industry, “replace transmission” can mean installing a brand‑new unit, a factory or third‑party remanufactured unit, a rebuilt unit from a local shop, or a used/salvage assembly. Whether a torque converter is included depends on the type of transmission and the source of the replacement.

Automatic transmissions (traditional stepped-gear)

For conventional automatics, the torque converter is a critical, wear-prone component that can hold debris from a failed transmission. Because of that, major remanufacturers typically ship a matching converter with the transmission and require its installation to validate the warranty. Used/salvage transmissions may or may not come with a converter attached, and local rebuilds might list the converter separately.

CVT, DCT, and manual edge cases

Continuously variable transmissions (CVTs) sometimes use a torque converter (many do), but others use a start clutch instead; dual‑clutch transmissions (DCTs) use clutch packs, not torque converters; and manual transmissions use a clutch, not a converter. Replacement policies differ accordingly.

When the torque converter is typically included

These are the common situations where a torque converter comes with the job or is required as part of it.

• Factory or third‑party remanufactured automatic transmissions: Commonly bundled with a reman torque converter and a requirement to install it for warranty coverage.
• Dealer “transmission assembly” on late‑model vehicles: Frequently includes the converter when sold as a complete automatic unit; the invoice should spell it out.
• Comprehensive rebuild packages: Many shop rebuilds include either a new or reman converter to prevent contamination from the old unit.
• CVTs that originally use a torque converter: Replacements often include a matched converter when the design requires one.

In all of these cases, the inclusion is about reliability and warranty: a mismatched or contaminated converter can compromise a fresh transmission and void coverage.

When the torque converter may not be included

These are scenarios where you should not assume a converter is part of the replacement and must confirm the parts list.

• Used or salvage transmissions: The yard may sell the transmission alone; the converter could be missing, damaged, or sold separately.
• Budget or a la carte rebuilds: Some quotes reuse the existing converter; this can be risky if the original transmission failed catastrophically.
• Manual transmissions: No torque converter exists—look for a clutch kit and possibly a flywheel instead.
• Dual‑clutch transmissions (DCT): No torque converter—expect clutch pack and mechatronic service items.
• CVTs that use a start clutch: No torque converter in the design, so none will be included.

If your estimate falls into any of these categories, request clarity in writing to avoid surprises and ensure the work aligns with best practices.

How to read your estimate and work order

Before authorizing a transmission replacement, verify the scope and parts in writing. The checklist below outlines what to look for on the estimate or repair order.

1. Line item for “torque converter” with part number and whether it’s new, reman, or reused.
2. Warranty terms specifying that the provided converter must be installed (common on reman units).
3. Fluid specification (OE‑approved ATF/CVT fluid) and quantity listed.
4. Cooler service: “cooler flush” and, if debris is present, “cooler/lines replacement.”
5. Programming/adaptations: TCM software updates and shift/learn procedures.
6. Core policy: whether the old transmission and converter must be returned for core credit.
7. Labor operations: R&R transmission, converter install, road test, and leak check.

Clear documentation here protects your warranty and ensures the job addresses root causes, not just symptoms.

Warranty and core-charge implications

Converter handling can affect both your warranty coverage and your wallet. Keep these points in mind.

• Warranty compliance: Many remanufactured units require the bundled converter to be installed and the cooler to be flushed or replaced.
• Core credit: If the replacement came with a converter, the shop usually must return your old converter with the old transmission to receive full core credit.
• Proof of procedures: Shops may need to document cooler flushing, correct fluid fill, and TCM updates for claims.

Maintaining a paper trail—including parts numbers and procedures performed—streamlines any future warranty claim.

Costs to expect

Pricing varies by vehicle and supplier, but the following ranges are typical in North America as of 2025.

• Torque converter part: Approximately $150–$600 for mainstream vehicles; performance or heavy‑duty units can exceed $800.
• Labor if replacing converter separately: Often 3–6 hours, but this is typically included in transmission R&R labor when done together.
• Transmission cooler service: $50–$300 for flush; $150–$600+ if the cooler or lines must be replaced.
• Software/programming: $100–$250 depending on make and dealer/shop rates.

When bundled with a reman transmission, the converter cost is often embedded in the package price and shown as included or listed as a separate no‑charge item.

Best practices for a lasting repair

To protect your investment, confirm that the shop follows these reliability-focused steps.

• Install the matched torque converter provided with a reman unit (if applicable).
• Flush or replace the transmission cooler and lines to remove debris and prevent repeat failure.
• Use only OE‑specified fluid and fill procedures; set correct fluid level at specified temperature.
• Perform TCM updates and adaptive relearns; complete a thorough road test and leak check.
• Inspect and replace related wear items (mounts, seals, flexplate inspection) as needed.

These measures reduce comebacks and are often required to keep warranty coverage intact.

Signs your torque converter shouldn’t be reused

If you’re considering reusing a converter, watch for these red flags indicating replacement is prudent.

• Shudder, vibration, or “rumble strip” sensation at steady speeds (lock‑up issues).
• Delayed engagement into Drive/Reverse or intermittent stall at idle.
• Excessive metallic debris or black sludge in the pan or cooler lines after a failure.
• Overheating history or burnt, dark ATF with a strong odor.

Any of these symptoms suggest internal converter damage or contamination that could jeopardize a fresh transmission.

Manual, DCT, and CVT quick guide

Not every transmission uses a torque converter. Here’s how designs differ so you know what to expect.

• Manual: Uses a clutch and flywheel; no torque converter.
• Dual‑clutch (DCT): Uses one or two clutch packs and a mechatronic unit; no torque converter.
• CVT: Some designs use a torque converter; others use a start clutch. Your VIN and service info will specify which.

Understanding the transmission type on your vehicle ensures your estimate includes the right parts and procedures.

Bottom line

For conventional automatics, a proper transmission replacement typically includes a matched torque converter—especially with remanufactured units—and installing it is often required for warranty. Used/salvage assemblies or budget rebuilds may omit it, and manuals or most DCTs don’t use one at all. Always verify your estimate and warranty terms in writing.

Summary

Most remanufactured automatic transmission replacements include—and require—the torque converter, while used units and some local rebuilds may not. Manuals and DCTs don’t use torque converters; CVTs may or may not, depending on design. Confirm the converter, cooler service, fluid spec, programming, and warranty requirements on your estimate to ensure a reliable, covered repair.

Should the torque converter be replaced with transmission?

Yes, the torque converter should be replaced with a rebuilt or new transmission because a failed torque converter often contaminates the transmission fluid with metal shavings and debris, which can cause premature failure of the new transmission if not thoroughly cleaned. While a torque converter can be a standalone part, and the transmission doesn’t always need replacement, you must either replace the torque converter or have the transmission professionally rebuilt to clean out the harmful contaminants.
 
Why Replace the Torque Converter with a Transmission

• Contamination: A failing torque converter sheds metal particles and debris, which can remain in the transmission fluid and damage new transmission components. 
• Internal Damage: It is nearly impossible to thoroughly clean every bit of this debris from a torque converter, making replacement the safest option to prevent damage to the new or repaired transmission. 
• Rebuilt Transmissions: A new or rebuilt torque converter is considered a mandatory component of a rebuilt automatic transmission, as the risk of contamination is too high. 

When the Transmission Might Not Need Replacement

• Early Failure Detection: If you catch the torque converter failure very early, it may be possible to replace just the torque converter, especially if you can confirm there is no metal contamination in the transmission fluid. 
• Professional Overhaul: A skilled transmission specialist can dismantle and clean the internal components of the torque converter, but this is a detailed and complex process. 

What to Do

1. Inspect for Debris: Check the transmission fluid for metal shavings or other suspended particles, which indicate a contaminated system. 
2. Consult a Professional: A mechanic or transmission specialist can properly assess the torque converter and the transmission’s internal condition. 
3. Consider Replacement: If the transmission requires removal for any reason, and a torque converter failure is suspected or known, replacing the torque converter is the recommended practice to prevent future issues. 

Does the torque converter come out with the transmission?

No, the torque converter does not automatically come out with the transmission; you must first unbolt the torque converter from the engine’s flex plate before you can separate the transmission from the engine. Once you’ve unbolted the transmission, you carefully pull the transmission straight back from the engine, which allows the torque converter’s splines to disengage from the transmission’s input shaft, and then the transmission can be lowered.
 
Steps for Removing a Transmission and Torque Converter

1. Access the converter bolts: Opens in new tabYou may need to remove an inspection cover on the engine’s bell housing to access the bolts that fasten the torque converter to the engine’s flex plate. 
2. Unbolt the torque converter: Opens in new tabWith the converter supported, unbolt it from the flex plate. 
3. Support the transmission: Opens in new tabEnsure the transmission is properly supported before unbolting its bell housing from the engine block. 
4. Separate the transmission: Opens in new tabPull the transmission straight back from the engine, making sure the torque converter stays on the engine’s flex plate. 
5. Remove the converter: Opens in new tabOnce the transmission is clear, the torque converter will be left on the engine. 

Important Considerations

• Seating the converter: Opens in new tabYou must ensure the torque converter is properly seated in the transmission before reinstallation. It should sit flush, or recessed by a specific amount, to avoid damage to the transmission’s oil pump when the bell housing is reattached. 
• Fluid loss: Opens in new tabBe prepared for transmission fluid to spill out when the torque converter is removed. 
• Pump damage: Opens in new tabForcing the transmission onto the engine without the torque converter fully seated can break the front oil pump, leading to costly repairs. 

Does a new transmission include a torque converter?

Yes, a new or factory rebuilt automatic transmission typically comes with a new or remanufactured torque converter, as it is a critical component that must be replaced to avoid contamination from the old transmission and to ensure the new unit functions correctly. If you are replacing a transmission, you must purchase a new torque converter along with the transmission itself, as it is essential for proper operation and warranty purposes.
 
Why a new torque converter is included:

• Contamination: When an automatic transmission fails, debris and metal filings are often present in the transmission fluid. Since the torque converter is a sealed unit with internal parts that cannot be fully cleaned, it must be replaced to prevent these contaminants from damaging the new transmission. 
• Warranty: To avoid voiding the warranty on a new or rebuilt transmission, a new torque converter is a mandatory replacement. 
• Efficiency: A new torque converter ensures the new transmission unit is operating with a clean and efficient component from the start, preventing potential issues with performance or shifting. 

What to expect when replacing an automatic transmission:

• New Transmission: A new, factory rebuilt, or high-quality remanufactured transmission should include a new or remanufactured torque converter. 
• Shop Transmission: Be cautious of shops offering transmissions without a torque converter, as you will need to purchase one separately, and the old one should never be reused. 
• Installation: The torque converter needs to be properly centered and installed onto the transmission’s output shaft to avoid damage to the flexplate or internal components. 

Key takeaway: When replacing an automatic transmission, always confirm that a new or remanufactured torque converter is included, as it is an integral part of the unit and a necessary replacement for a successful repair.

Is the torque converter considered part of the transmission?

Yes, the torque converter is a component of an automatic transmission. It acts as a fluid coupling, connecting the engine to the transmission and transferring power through transmission fluid. It replaces the mechanical clutch found in manual transmissions, allowing for smooth power transfer and preventing the engine from stalling when the vehicle is stopped.
 
This video explains the basics of how a torque converter works: 1mPOWERNATIONYouTube · Aug 7, 2017
How it works:

• Fluid Coupling: Opens in new tabThe torque converter uses transmission fluid to transmit power from the engine’s rotating crankshaft to the transmission. 
• Pump (Impeller): Opens in new tabConnected to the engine, this component spins and uses fins to fling fluid outward. 
• Turbine: Opens in new tabThe high-energy fluid then spins a second component, the turbine, which is connected to the transmission. 
• Stator: Opens in new tabLocated between the pump and turbine, the stator multiplies engine torque, especially when the vehicle is accelerating from a stop. 
• Lock-up Clutch: Opens in new tabSome torque converters also feature a lock-up clutch that engages during normal driving to provide a direct, mechanical connection, which improves fuel efficiency by reducing slippage. 

Why it’s considered part of the transmission:

• Power Flow: The torque converter is the first component in the drivetrain that receives power from the engine and sends it to the actual gear sets within the transmission. 
• Functional Equivalence: It performs the same essential functions as a clutch in a manual transmission—allowing the engine to run when the vehicle is stopped and transferring power to the transmission. 
• Integrated Housing: The torque converter is typically located inside the transmission bell housing, further emphasizing its integral role in the transmission system.