The Dodge Challenger SRT Demon 170 was engineered to tolerate extraordinary mechanical forces, but a relatively small component has now put hundreds of the limited-production muscle cars on the sidelines. FCA US has launched Customer Satisfaction Notification C6C covering about 345 2023 Demon 170s because fasteners inside the crankshaft vibration damper may loosen.
The company warns that the condition can create unusual engine-compartment noise, damage the front timing-chain cover and, if ignored, eventually lead to engine failure. Dodge is strongly recommending that affected owners have their cars transported to dealerships rather than driving them in. For a machine famous for producing more than 1,000 horsepower, that unusually cautious instruction makes the campaign especially noteworthy.
Only About 345 Demon 170s Are Involved
The campaign covers approximately 345 examples of the 2023 Dodge Challenger SRT Demon 170 equipped with the 6.2-litre High-Output engine. FCA identifies the campaign internally as C6C. Dodge originally planned no more than 3,300 Demon 170s for production, including as many as 3,000 for the United States and 300 for Canada, meaning the campaign potentially involves roughly one in every ten examples from the limited run.
Importantly, Demon 170 owners cannot determine whether their car is affected simply by looking at where its VIN falls in the production sequence. Dodge told Mopar-focused publication MoparInsiders that the potentially affected components were traced to a specific supplier production period and that affected VINs are not necessarily sequential. FCA has entered the involved vehicles into its dealer systems and is contacting known owners directly. That targeted identification is one reason the campaign remains relatively narrow despite the seriousness of the possible failure.
The Problem Starts Inside the Crankshaft Damper
FCA’s technical documentation identifies the internal fasteners of the crankshaft vibration damper as the central concern. Those fasteners may loosen on the affected vehicles. The damper is not merely an accessory bolted onto the Demon 170’s engine. Dodge’s original technical description of the car specifically notes that its viscous crankshaft damper is used to help reduce torsional vibration generated by the extraordinarily powerful supercharged V8.
If the internal fasteners loosen, FCA says an owner may initially notice an unusual sound coming from the engine compartment. Continued operation can then damage the front timing-chain cover and associated engine components. That progression explains why the company is treating an apparently small fastening problem with unusual caution. The campaign is intended to replace the complete crankshaft damper and its attaching bolt before secondary damage develops, rather than waiting for symptoms to become severe enough to require substantially more engine work.
Engine Failure Is the Worst-Case Concern
The official FCA campaign document uses unusually direct language about what can happen if the condition is ignored: damage to the timing-chain cover can ultimately result in engine failure. Dodge’s customer letter similarly warns that continued operation after the condition develops could damage related engine components and urges owners to arrange the service as soon as possible.
MoparInsiders reported that Chrysler/Dodge CEO Matt McAlear described the worst-case outcome as potentially involving catastrophic engine damage. The publication also reported that Dodge had encountered some failures in the field, which helped trigger the investigation that identified the group of potentially affected vehicles. Road & Track subsequently reported the same concern after reviewing the campaign. The available FCA documentation does not say that every affected damper will loosen or that every car would suffer engine failure. Instead, the campaign is designed to remove that possibility before a minor mechanical condition progresses into a much more expensive failure.
Dodge Does Not Want Owners Driving to the Dealership
The most striking part of the customer communication is not simply the repair itself but how Dodge wants the affected cars to reach the dealership. FCA tells owners that, because the repair involves a critical engine component, it strongly recommends having an affected Demon 170 transported to the dealer rather than driven there. Dodge says it will cover the transportation cost.
A revised version of the dealer campaign goes further by adding specific towing allowances. The document provides reimbursement of up to $250 for towing a vehicle from the customer’s location to the dealer and another allowance of up to $250 for returning it, with higher amounts subject to corporate review. That is an unusually careful approach for a service campaign involving only a few hundred cars. Owners therefore have little reason to risk driving a flagged vehicle simply to get it repaired, particularly when transportation is already built into the campaign process.
This Is a Service Campaign, Not a Formal Recall
Despite the seriousness of the warning, C6C is categorized as a Customer Satisfaction Notification and manufacturer service campaign rather than a federal safety recall. That distinction matters because owners searching only conventional recall databases may not immediately see the campaign displayed in the same way as a formal safety recall.
NHTSA describes a safety recall as an action taken when a manufacturer or the agency determines that a vehicle or component presents an unreasonable safety risk or fails to meet minimum safety standards. FCA’s C6C documentation is instead filed as a manufacturer communication concerning the engine. That does not make the recommended repair optional in any practical sense for an affected owner. Dodge is contacting customers, instructing dealers to complete the campaign on involved vehicles and paying for the parts and labour. Dealers are also directed to repair affected cars in new or used inventory before they are delivered to customers.
The Actual Repair Is Relatively Focused
Although the possible consequence sounds severe, FCA’s prescribed remedy does not involve replacing the engine. Technicians are instructed to remove the existing crankshaft vibration damper and its bolt, discard both components and install new replacements. The dealer campaign assigns 1.3 labour hours to the damper replacement, while Dodge’s customer letter tells owners the repair itself should take approximately two hours, excluding additional dealership processing time.
The procedure is more involved than simply removing one visible bolt. Technicians disconnect the battery, remove the accessory and supercharger belts, move the cooling fan assembly and drain part of the low-temperature cooling circuit to gain access. Special damper holding, removal and installation equipment is used. FCA then specifies installation of a new bolt tightened to 200 N·m, or 148 lb-ft, followed by an additional 150 degrees of rotation. The cooling system and belts are subsequently reassembled and checked.
The Demon 170 Places Extraordinary Demands on Its Hardware
The crankshaft issue attracts additional attention because of what the Demon 170’s engine was designed to accomplish. On high-ethanol fuel, Dodge rated its supercharged 6.2-litre HEMI V8 at 1,025 horsepower and 945 lb-ft of torque. On E10 gasoline, output was still rated at 900 horsepower and 810 lb-ft. Dodge increased supercharger boost to 21.3 psi and upgraded numerous internal engine and driveline components to cope with the additional cylinder pressure and torque.
The company said cylinder pressure was 32% higher than in the Challenger Hellcat Redeye Widebody, reaching approximately 2,500 psi on E85. Stronger connecting rods, upgraded main and rod bearings, high-strength cylinder-head studs and billet-steel main caps were among the changes. Dodge even highlighted the viscous crankshaft damper as part of the engine package. Against that backdrop, ensuring the damper assembly remains securely fastened is particularly important on a vehicle designed around extreme acceleration.
These Cars Were Built for Performance Few Factory Vehicles Can Match
The Demon 170 was not merely another Challenger trim level. Dodge launched it as the final “Last Call” special edition celebrating the end of that generation of HEMI-powered Challenger production. The company claimed a 0-to-60-mph time of 1.66 seconds under its specified conditions and an NHRA-certified quarter-mile run of 8.91 seconds at 151.17 mph.
Dodge also reported peak acceleration of 2.004 g, numbers normally associated with purpose-built drag machinery rather than a factory vehicle carrying a VIN. The original manufacturer’s suggested retail price was $96,666 before destination charges and options, although the model’s limited availability quickly made individual cars significant enthusiast purchases. That context helps explain why Dodge’s response goes beyond simply mailing owners a repair notice. Many Demon 170s are enthusiast or collector vehicles, and preventing avoidable engine damage on such a specialized machine is considerably easier than dealing with the consequences after a damper failure.
Owners Need to Check the CSN Section, Not Just Recalls
Because C6C is not classified as a conventional safety recall, Demon 170 owners checking their vehicles online need to pay attention to the Customer Satisfaction Notification information associated with their VIN. Dodge has identified the specific vehicles involved and is contacting affected customers, while dealers can verify campaign status through FCA’s Vehicle Information Plus and Global Recall System databases.
MoparInsiders and Road & Track report that owners can also use Mopar’s online VIN lookup but should specifically check for the CSN campaign rather than assuming a clean recall screen means nothing applies. Dodge has said vehicles without an applicable C6C notification can continue operating normally. Owners whose cars are included should arrange the repair through an authorized dealer and coordinate transportation rather than simply driving the vehicle in. FCA’s customer communication says a Customer Assistance Advocate can also help coordinate the process, including transportation for an affected vehicle.
The Warning Is Serious Even Though the Repair Is Small
C6C illustrates how the seriousness of an automotive problem is not always proportional to the size of the component being replaced. The remedy consists primarily of a new crankshaft damper and bolt, yet leaving the original condition uncorrected can potentially damage the timing-chain cover and eventually the engine. That is why Dodge is recommending transportation rather than asking customers simply to drive to their next service appointment.
For Demon 170 owners, the sensible response is therefore straightforward: confirm the VIN’s campaign status before driving the car and follow Dodge’s transportation instructions if C6C appears. FCA is supplying the parts and labour without charge, has added towing provisions to the dealer program and estimates that the mechanical repair itself can be completed in roughly two hours. For one of Dodge’s most extreme production cars, replacing two components now is a comparatively minor intervention compared with repairing a damaged 1,025-horsepower engine later.
