68436815AA vs 68436815AB: Fuel Filter Cap Fitment Checks
Understand the AA/AB part-number reference, compare Ram diesel applications and choose between a cap only and a cap with filter.
What is the relationship between 68436815AA and 68436815AB?
The official Mopar eStore lists 68436815AB as replacing 68436815AA. That is a catalog reference for the original part, not a guarantee that every aftermarket cap or every Ram truck will fit. Confirm your vehicle and compare the existing housing before ordering a replacement.
Is this a fuel filler cap or an oil cap?
The Bolooloo product on this page is a fuel filter housing cap. It closes the matching filter housing; it is not the cap removed when refueling or adding engine oil. Identify the component you are replacing before using a part number to choose a product.
Which Ram diesel applications are listed for Bolooloo?
The following are the applications listed for this Bolooloo product. They are a starting point for comparison, not a VIN-level fitment lookup or a claim of universal fit across every trim.
| Vehicle family | Listed years | Listed engine | Additional check |
|---|---|---|---|
| Ram 1500 | 2020–2023 | 3.0L diesel | Original cap number and housing layout |
| Ram 2500 / 3500 / 4500 / 5500 | 2019–2024 | 6.7L diesel | Original cap number and housing layout |
Do not extend this list to a different engine or model year just because the cap looks similar. If the original part number is missing, confirm the required part through the vehicle’s parts catalog or a qualified parts specialist.
What should I compare on the existing cap?
- Read the complete part number, including the AA or AB suffix.
- Confirm the vehicle year, model and engine together.
- Compare the overall cap shape, threaded section and connector layout with the product photos.
- Check whether you need only the cap or a cap supplied with a filter element.
- Resolve any mismatch before ordering; do not force a cap onto a different housing.
Cap only or cap with filter: which option do I need?
| Option | Listed contents | ASIN |
|---|---|---|
| Cap only | 1 fuel filter housing cap; filter element not included | B0H8RQ5RWB |
| Cap with filter | 1 fuel filter housing cap with filter element | B0H8RNZW97 |
Choose according to the service parts you need after checking fitment. Neither option is described here as a complete fuel filter housing assembly. Confirm any additional service items with your installer.
Is the Bolooloo cap a genuine Mopar part?
No. Bolooloo is an independent aftermarket brand. Ram and Mopar names and original part numbers are used to explain compatibility references, not manufacturer affiliation or endorsement.
How can I get help before buying?
Send Gary the vehicle year, model, engine, original part number and clear photos of the existing cap and its connector layout. If you cannot identify the correct housing, ask a qualified parts specialist to confirm it before placing an order.
Sources & scope
Bolooloo-specific specifications, package contents and listed applications are based on the brand’s supplied product information. This is a buying guide, not a laboratory test report or a vehicle-specific installation manual.
Part-number reference: Mopar eStore — 68436815AB. Checked September 29, 2026. This source establishes the AA/AB catalog relationship only.