Summary
PEAK OET 50/50 North American Vehicles Yellow coolant data, from PEAK's own source. PEAK ORIGINAL EQUIPMENT TECHNOLOGY Antifreeze + Coolant 50/50 Prediluted for North American Vehicles - YELLOW is a 50/50 premix P-OAT ethylene glycol-based coolant listed by Old World Industries. The manufacturer lists 1 OEM or industry spec code, including WSS-M97B57-A1. Stated service life: 400,000 miles or 15 years.
What to buy
PEAK ORIGINAL EQUIPMENT TECHNOLOGY Antifreeze + Coolant 50/50 Prediluted for North American Vehicles - YELLOW · Premix 50/50 · lists WSS-M97B57-A1
Confirm that your owner's manual calls for this spec before you buy.
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Confirm the specification in your owner’s manual before buying. Product examples are not a fitment guarantee.
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Specifications
| Brand | PEAK |
|---|---|
| Maker | Old World Industries |
| Product | PEAK ORIGINAL EQUIPMENT TECHNOLOGY Antifreeze + Coolant 50/50 Prediluted for North American Vehicles - YELLOW |
| Part numbers (as published) | NAYB53 |
| Chemistry | P-OAT |
| Base glycol | Ethylene glycol |
| Colour | Yellow |
| Premix or concentrate | Premix 50/50 |
| OEM / industry specs listed | WSS-M97B57-A1 |
| ASTM standards listed | ASTM D3306, ASTM D4985 |
| Service life claim | 400,000 miles or 15 years |
| Free-of claims | nitrite-free, borate-free, silicate-free, amine-free |
| Datasheet | datasheet |
| Not published by the maker | Sizes, Freeze point. Check the product label or ask the manufacturer. |
| Source | manufacturer page |
| Last checked | 22 October 2026 |
Specs and approvals listed by the manufacturer
- Meets WSS-M97B57-A1 per PEAK (Ford)
- Meets ASTM D3306 per PEAK (industry test standard)
- Meets ASTM D4985 per PEAK (industry test standard)
Manufacturer wording: It meets the performance requirements of Ford WSS-M97B57-A1, ASTM D3306 and D4985.
"Meets X per manufacturer" is our shorthand for any of the manufacturer's own phrases: meets, meets or exceeds, approved, or recommended for applications requiring. It is the manufacturer's claim, not an approval by Coolant.com or by the vehicle maker. Codes are copied as published. Some sources list codes for compatibility rather than formal approval. The wording above shows which.
What the manufacturer says it is for
Specifically designed for use in all North American vehicles requiring a YELLOW phosphate-enhanced organic acid technology (POAT) extended life antifreeze/coolant.
Quoted from the manufacturer's page. Coolant.com has not verified fitment for any vehicle, and a listed make or year range is the manufacturer's statement, not ours.
Alternatives that list the same spec
Other coolants whose makers list at least one of the same OEM codes as PEAK ORIGINAL EQUIPMENT TECHNOLOGY Antifreeze + Coolant 50/50 Prediluted for North American Vehicles - YELLOW. More shared codes first. Match the exact code in your manual, and do not mix chemistries when topping up.
| Product | Same code(s) |
|---|---|
| PEAK ORIGINAL EQUIPMENT TECHNOLOGY Concentrate Antifreeze + Coolant for North American Vehicles - YELLOW PEAK · P-OAT · Concentrate | WSS-M97B57-A1 |
Compatibility notes
- If your owner's manual calls for WSS-M97B57-A1, PEAK lists that code for this product. Read the exact wording above, and confirm against your manual.
- Chemistry is listed as P-OAT. Mixing different chemistries can shorten coolant life. See OAT vs HOAT vs IAT and use the mixing checker before topping up.
- Colour is listed as Yellow. Colour is a dye, not a spec, so two coolants of the same colour can be different chemistries. See coolant colours explained.
- Sold premixed: pour as supplied. Do not add water unless the label says to.
Where to buy
Amazon listings come from third-party sellers as well as Amazon. Check that the part number, size and premix/concentrate match before you buy.
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- Check price on Amazon (listed on the manufacturer page; the retailer blocks automated checks)
These links come from the manufacturer's own product page or official parts store. We do not show prices because they change and vary by store. Check that the part number and size match before you buy.
Related tool
Compare this coolant side by side
Open the comparison →Related products with the same listed chemistry
Related products with the same listed chemistry
- OEM Extended Life BLUE Antifreeze/Coolant (Recochem, Concentrate and Premix 50/50)
- PEAK ORIGINAL EQUIPMENT TECHNOLOGY Concentrate Antifreeze + Coolant for North American Vehicles - YELLOW (PEAK, Concentrate)
- PEAK ORIGINAL EQUIPMENT TECHNOLOGY Antifreeze + Coolant 50/50 Prediluted for Asian Vehicles - BLUE Check price (PEAK, Premix 50/50)
- PEAK ORIGINAL EQUIPMENT TECHNOLOGY Antifreeze + Coolant 50/50 Prediluted for Asian Vehicles - RED/PINK Check price (PEAK, Premix 50/50)
- PEAK ORIGINAL EQUIPMENT TECHNOLOGY Concentrate Antifreeze + Coolant for Asian Vehicles - GREEN Check price (PEAK, Concentrate)
- PEAK ORIGINAL EQUIPMENT TECHNOLOGY Concentrate Antifreeze + Coolant for Asian Vehicles - RED/PINK (PEAK, Concentrate)
Vehicle makes linked to this coolant
These make pages explain what each vehicle maker specifies. The reason each one links here is shown next to it. This is not a fitment claim, so check your owner's manual.
- What coolant Ford specifies (the manufacturer lists a spec code from this vehicle maker)
More from PEAK
- PEAK All Vehicles Concentrate Antifreeze + Coolant
- PEAK All Vehicles 50/50 Prediluted Antifreeze + Coolant
- PEAK DEX-COOL 50/50 Prediluted Antifreeze + Coolant
- PEAK DEX-COOL Concentrate Antifreeze + Coolant
- PEAK Global Lifetime 50/50 Antifreeze + Coolant
- PEAK Global Lifetime Concentrate Antifreeze + Coolant
See every PEAK product we list, with the chemistries and spec codes the maker names, on the PEAK coolant brand page.
See all PEAK coolants, coolants by brand or coolant by car make.
Browse the full coolant directory, or use Find my car coolant to match the spec in your owner's manual.
Ready to buy?
PEAK ORIGINAL EQUIPMENT TECHNOLOGY Antifreeze + Coolant 50/50 Prediluted for North American Vehicles - YELLOW · Premix 50/50 · lists WSS-M97B57-A1. Check that your owner's manual calls for it.
Check price on AmazonAll buying optionsAs an Amazon Associate I earn from qualifying purchases. Commissions never change which products we list or what the data says.
How we source this page
- Facts come from manufacturer pages, datasheets, owner's manuals and standards bodies, linked under Sources.
- We do not test products, and no brand pays to be listed or ranked. Advertising and affiliate links are labelled and never change the data.
- Anything we could not find is marked "not published" rather than guessed. Spotted an error? Tell us.