Mopar 68163849AB Coolant Specs That Drivers Miss
- 01. Mopar 68163849AB coolant - direct answer
- 02. What the part number means
- 03. Chemistry and specifications
- 04. Why you shouldn't mix it
- 05. Fitment and vehicle coverage
- 06. Usage, handling and service guidance
- 07. Practical stats and historical context
- 08. Compatibility checklist
- 09. Signs your coolant is wrong or contaminated
- 10. Troubleshooting case example
- 11. Quick buy and part-sourcing notes
- 12. Maintenance checklist before refill
- 13. Final practical recommendation
Mopar 68163849AB coolant - direct answer
Mopar 68163849AB is a factory OEM, 50/50 premixed ethylene-glycol based **OAT (Organic Acid Technology)** coolant premix formulated for Chrysler/FCA/Mopar vehicles, specified as a long-life 10-year/150,000-mile formula and **must not be mixed** with non-conforming antifreezes or different chemistries.
What the part number means
The part number 68163849AB identifies the premixed 50/50 retail gallon (3.785 L) SKU of Mopar's long-life coolant; the closely related number 68163848AB is the **concentrate** counterpart intended for dilution or bulk service use.
Chemistry and specifications
This coolant is an ethylene-glycol base using OAT corrosion inhibitors (phosphate-free organic acids) and is marketed as a 10-year/150,000-mile service life when used as factory fill or as a full system replacement.
| Attribute | Specification (Mopar 68163849AB) |
|---|---|
| Formulation | Ethylene-glycol OAT premix (50/50) |
| Service life claim | 10 years / 150,000 miles (manufacturer marketing specification) |
| Volume / pack | 1 gallon (3.785 L) premixed bottle SKU |
| Color (typical) | Purple / Black (Mopar variant) - OEM datasheets list purple/black variants for OAT family |
| Mixing instructions | Do not add water (sold pre-diluted 50/50; do not mix with other coolant chemistries) |
| Standards / OEM codes | MS-12106 / MS-90032 and Mopar OAT family references shown on OEM product pages |
Why you shouldn't mix it
Mopar explicitly warns that this OAT formula "must not be mixed with any non-conforming antifreeze," because mixing OAT with inorganic or hybrid chemistries can neutralize inhibitors, cause gel formation or precipitation, and dramatically shorten corrosion protection life; mixing different types is a frequent root cause of cooling-system failures.
Fitment and vehicle coverage
The 68163849AB premix is sold as the OEM coolant for a broad set of Chrysler, Dodge, Jeep, Ram and Fiat vehicles (examples: Fiat 500/500L, many Jeep and Ram models) and is cross-referenced to several Mopar part numbers used across years; always confirm fitment with VIN or parts catalog.
Usage, handling and service guidance
- When topping off, use only the same Mopar OAT premix to retain the claimed 10-year protection life and inhibitor balance; do not mix technologies.
- For full coolant change, follow manufacturer procedures: flush to near-blank (if contaminated) before refilling with Mopar 68163849AB premix to avoid cross-contamination.
- If you have the concentrate SKU (68163848AB), dilute exactly per label (typically to 50/50) and then treat it as the same OEM fluid.
- Record the service date and mileage; Mopar marketing states a 10-year/150,000-mile nominal interval when used as factory fill-real-world shops often recommend inspection every 3 years or 60,000 miles.
- Dispose of used coolant per local hazardous waste rules; ethylene-glycol is toxic to animals and humans.
Practical stats and historical context
Mopar introduced the OAT long-life formulas in the mid-2000s as the industry shifted from silicate/phosphate inorganic inhibitors to organic acids for improved aluminum protection; by 2015 many FCA vehicles were factory-filled with OATs, and Mopar's 10-year marketing appeared on OEM packaging in the 2010s.
Independent retailer listings and databases show the 68163849AB SKU sold widely since at least 2019, with online retail prices typically ranging from about $12-$20 per gallon in U.S. markets (sample prices observed on parts sites).
Compatibility checklist
- Only mix with the same Mopar OAT product or OEM-approved OAT formulations that explicitly list MS-12106/MS-90032 equivalency.
- Do not mix with IAT (green), HOAT (hybrid), or phosphate-containing formulations unless the manufacturer explicitly states compatibility.
- Use concentrate (68163848AB) only if you correctly dilute to 50/50; otherwise buy the premix 49AB to avoid dilution errors.
Signs your coolant is wrong or contaminated
Warning signs include overheating, discolored or cloudy fluid, visible particulates or gel, recurring coolant loss with no visible leak (internal corrosion), and rapid loss of heater performance; any of these justify a system flush and refill with the proper Mopar premix.
Troubleshooting case example
In a documented online service discussion, a 2019 Fiat 500 owner reported mixing a different green IAT replacement with Mopar OAT and noticed sludge within 6 months; the veteran technician recommended a full flush and replacement with 68163849AB and cited the risk of neutralized inhibitors forming gelatinous deposits.
Quick buy and part-sourcing notes
Genuine Mopar part listings (authorized dealers and reputable online retailers) show the 68163849AB SKU priced modestly and available across parts channels; always verify seller authenticity and the part number on the label before purchase to avoid counterfeit or off-spec products.
"Must not be mixed with any non-conforming antifreeze" - label wording used on Mopar product documentation for the 68163849AB premix, emphasizing strict chemistry control.
Maintenance checklist before refill
- Confirm the current system fluid chemistry by service records or lab/test strip; if unknown, plan to flush the system.
- Inspect radiator, hoses, heater core and water pump for leaks and contamination.
- If converting to Mopar OAT premix from another chemistry, perform a thorough flush until expelled fluid is clear before adding 68163849AB.
- Top off only with the exact premix or OEM approved OAT product and record the date/mileage for future service tracking.
Final practical recommendation
Use Mopar 68163849AB premix for vehicles specified by FCA/Mopar, avoid mixing chemistries, and treat the product as a long-life OAT premix requiring careful service discipline; when in doubt, replace contaminated fluid and refill with the correct OEM part number to preserve warranty and system longevity.
Everything you need to know about Mopar 68163849ab Coolant Specs That Drivers Miss
What is Mopar 68163849AB?
Mopar 68163849AB is the OEM 50/50 premixed OAT antifreeze/coolant sold in 1-gallon retail packaging and marketed with a 10-year/150,000-mile life for compatible FCA vehicles.
Can I mix it with other coolants?
No, you should not mix 68163849AB with non-conforming coolants; Mopar explicitly states that mixing different chemistries can invalidate inhibitor protection and cause system damage.
Is 68163849AB the same as 68163848AB?
No - 68163849AB is the premixed 50/50 retail bottle, while 68163848AB is typically the concentrate SKU intended for dilution to the same OEM ratio.
What color is the fluid?
Mopar OAT family coolants may be listed as purple or black in product pages, depending on regional variants and dye used; color alone is not a reliable compatibility indicator, so follow part numbers and OEM specs.
How long does the coolant last?
Mopar lists this product as a 10-year/150,000-mile formula when used as factory fill or proper replacement; however, many technicians recommend intermediate inspections and earlier replacement if contamination is present.