Who makes Mopar automatic transmission fluid?
Mopar automatic transmission fluid (ATF+4) is produced by contract manufacturers under license to Stellantis (the parent company of Mopar). There isn’t a single publicly disclosed maker, and the exact producer can vary by region and batch. Consumers should check the bottle label for any producer information.
What Mopar ATF+4 is and why it matters
Mopar ATF+4 is the transmission fluid Chrysler (now Stellantis) requires for many of its automatic transmissions. It is formulated to meet the ATF+4 specification, which covers shift feel, protection of seals, lubrication of gears, and overall transmission longevity. The specification is specific to Chrysler/Jeep/Dodge/Ram applications, and using a fluid that does not meet ATF+4 can affect performance and warranty coverage.
Because the manufacturer of Mopar ATF+4 is outsourced, the exact production source may vary. The important detail for consumers is that the product fulfills Mopar’s ATF+4 specification and part number, regardless of which contract manufacturer produced it.
Before turning to the next section, note that the original equipment manufacturer (OEM) often relies on a network of third-party lubricants suppliers to produce fluids that meet its specs. The public-facing label typically emphasizes compatibility and specification rather than naming the exact contract producer.
- Manufacturing is contract-based: Mopar ATF+4 is produced by third-party lubricant manufacturers under contract with Stellantis and labeled to meet Mopar’s ATF+4 specification.
- Regional packaging differences: Bottles sold in different markets may display different producer names or simply say “Manufactured for Chrysler Group LLC” with the contractor’s name on the back label.
- Specification remains constant: Regardless of the maker, the product must meet the Mopar ATF+4 standard and part number to be used in eligible transmissions.
The takeaway is that the exact maker can vary by region and batch, and the brand’s primary role is to guarantee ATF+4 compatibility rather than to identify a single in-house producer. If you need to confirm the specific contractor for a particular bottle, check the back label or contact Stellantis/Mopar customer support with the product code and batch details.
How to identify the maker on a Mopar ATF+4 bottle
If it matters to you who produced a given bottle, you can look for identifying details on the packaging. The following steps help you verify the maker when shopping or auditing a fluid change:
- Read the back label for a “Manufactured for” or “Produced for” line, which may name the contractor or the distribution partner alongside Mopar/Chrysler branding.
- Check for a batch or lot code that sometimes encodes the production facility. Cross-referencing the code with distributor records can reveal the maker.
- Compare the product code (part number) and packaging details with information on Mopar’s official site or retailer listings in your region, which may reference the production partner.
- When in doubt, contact Mopar/ Stellantis customer support with the bottle’s code and lot information to obtain confirmation about the contract manufacturer for that batch.
In practice, many buyers rely on the ATF+4 specification being met rather than the identity of the contract producer. If you’re replacing fluid as part of routine maintenance, matching the exact Mopar ATF+4 specification is the key requirement.
Regional variations and history
The ATF+4 specification was introduced to address Chrysler's transmissions and has been widely used across Jeep, Dodge, RAM, and other Stellantis brands. Over time, Stellantis has continued to license production to multiple contract manufacturers to support global distribution and regional supply needs. The presence of a specific producer on a bottle can reflect regional supply arrangements rather than a change in the fluid’s formulation.
Why manufacturers may vary
Varying contract manufacturers allows the OEM to optimize supply chains, manage costs, and meet local regulatory requirements. It also enables faster distribution across global markets while maintaining a consistent performance standard for ATF+4 applications.
Summary
Mopar ATF+4 is not produced by a single, in-house supplier. It is manufactured by contract lubricant manufacturers under license to Stellantis, with the exact producer varying by region and batch. The critical factor for vehicle owners is that the fluid meets Mopar’s ATF+4 specification and is appropriate for their transmission, rather than identifying the specific contractor. Always verify that the product you purchase carries the ATF+4 specification and consult the label or Mopar customer support if you need to confirm the exact maker for a given bottle.
