The 2021 Jac Sei 7 has 11 cooling system parts with verified fitment on this page — 2 part types and 5 brands, covering both the 1.5L L4 Turbocharged and the 2.0L L4 Turbocharged. Each part includes a manufacturer part number and application notes.
On the 2021 Jac Sei 7, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. All 11 listed parts are Coolant / Antifreeze (9 parts) and Water Pump (2 parts).
The 2021 Jac Sei 7 was sold with both the 1.5L L4 Turbocharged and the 2.0L L4 Turbocharged. 9 parts fit every engine; the other 2 are engine-specific. Each part shows which engine(s) it fits.
5 brands supply cooling system parts for the 2021 Jac Sei 7, led by PRESTONE (5 parts), PEAK (3 parts) and VALVOLINE (1 part), plus 2 more brands. Quality grades include Premium, Economy and Compatible With All Colors.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Jac Sei 7. 2 parts have it, including PRESTONE AF3100 (Coolant / Antifreeze) and PRESTONE AF2100 (Coolant / Antifreeze). Each part number opens a page with every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2021 Sei 7 engines | AF3055 | 🇲🇽 MX | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2021 Sei 7 engines | AF3100 | 🇲🇽 MX | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK Fits: all 2021 Sei 7 engines | BQA1GAL | 🇲🇽 MX | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE Fits: all 2021 Sei 7 engines | 719009 | 🇲🇽 MX | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Fits: all 2021 Sei 7 engines | AFC12100 | 🇲🇽 MX | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular Fits: all 2021 Sei 7 engines | AF2100 | 🇲🇽 MX | All Vehicles10yr/300k mi | View on Amazon |
| PEAK Fits: all 2021 Sei 7 engines | PKP1GAL | 🇲🇽 MX | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK Fits: all 2021 Sei 7 engines | PXA1GAL | 🇲🇽 MX | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE Fits: all 2021 Sei 7 engines | AFMAX | 🇲🇽 MX | Max Universal1 Gallon | View on Amazon |
This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator.
9 Coolant / Antifreeze parts are listed for the 2021 Jac Sei 7, from PRESTONE, PEAK and VALVOLINE. PRESTONE AF3100 carries the "Popular" badge. All of them fit every engine offered in the 2021 Sei 7.
The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.
In the Economy grade, PRESTONE, PEAK and VALVOLINE supply 3 parts: the catalog's value-priced group. A representative part number is PRESTONE AF3100.
The Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.
The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.
Part numbers include PRESTONE AF3100, PRESTONE AF3055 and PEAK BQA1GAL, among others listed above.
Water Pump
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 1.5L L4 Turbocharged | US8242 | 🇲🇽 MX | View on Amazon | |
| US MOTOR WORKS Fits: 1.5L L4 Turbocharged | US8242 | 🇲🇽 MX | View on Amazon |
This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off.
2 Water Pump parts for the 2021 Jac Sei 7 come from 2 brands — FVP and US MOTOR WORKS.
Listed part numbers: FVP US8242, plus the other parts above.
Buying Cooling System Parts for a 2021 Jac Sei 7
On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.
- Match the engine first. Some cooling system parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Coolant / Antifreeze and Water Pump .
Frequently Asked Questions
How many cooling system parts fit the 2021 Jac Sei 7?
Our catalog currently lists 11 cooling system parts for the 2021 Jac Sei 7 across 2 subcategories and 5 brands, covering both the 1.5L L4 Turbocharged and the 2.0L L4 Turbocharged. Each part is matched to the engine(s) it fits.
Do cooling system parts differ between 2021 Jac Sei 7 engines?
Some do. 9 parts fit every engine; the other 2 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of cooling system problems on a 2021 Jac Sei 7?
Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 Jac Sei 7 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 Jac Sei 7?
First match the engine — each row shows which engine(s) the part fits. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Jac Sei 7
Cooling System Parts for Other Jac Sei 7 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.