This page lists 34 cooling system parts for the 2006 Cadillac DTS, across 8 part types, covering the 4.6L V8 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2006 Cadillac DTS, 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. 25 parts of the 34 listed are Coolant / Antifreeze (16 parts), Coolant Hose / Pipe (5 parts) and Cooling System Tester Adapter (4 parts). The other 5 part types cover the remaining 9 parts.
Every part on this page is matched to the 4.6L V8 — the only engine offered in the 2006 Cadillac DTS.
The most listed brands for 2006 Cadillac DTS cooling system parts are PRESTONE (6 parts), DORMAN (4 parts) and PEAK (3 parts), plus 11 more brands. Quality grades include Standard Replacement, Economy and Premium.
5 parts on this 2006 Cadillac DTS page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and DORMAN 626713 (Coolant Hose / Pipe). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular | MV5050GAL | 🇺🇸 US 🇨🇦 CA | Extended LifeAll Makes / All Models | View on Amazon |
| PEAK | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| PRESTONE | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| VALVOLINE | 719009 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK | PXA1GAL | 🇺🇸 US 🇨🇦 CA | 1 GallonGlobal Lifetime | View on Amazon |
| PRESTONE | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 105027 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended LifeDexcool (with DE-Ionized Water) (with Bitterant) 1 Gallon | View on Amazon |
| VALVOLINE Popular | ZXEL1 | 🇺🇸 US 🇨🇦 CA | Dex-Cool Orange1 Gallon | View on Amazon |
| AISIN | ACD005 | 🇺🇸 US 🇨🇦 CA | OrangeOAT | View on Amazon |
| FVP | DEX5050GAL | 🇺🇸 US 🇨🇦 CA | Extended Life Blend1 Gallon | View on Amazon |
| PRESTONE | AF3400 | 🇺🇸 US 🇨🇦 CA | Prime OrangeOrange Compatible | View on Amazon |
| PRESTONE | AF850 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended Life1 Gallon | View on Amazon |
| VALVOLINE | 888374 | 🇺🇸 US 🇨🇦 CA | American Vehicle Orange1 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.
16 Coolant / Antifreeze parts for the 2006 Cadillac DTS come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL.
In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.
The Economy section lists 4 options from FVP, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.
In the Premium grade, PRESTONE and PEAK supply 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.
In the Standard Replacement grade, VALVOLINE, PRESTONE, ACDELCO and 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 626713 | 🇺🇸 US 🇨🇦 CA | LowerOverflow | View on Amazon |
| CONTINENTAL | 64408 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| DAYCO | 87903 | 🇺🇸 US 🇨🇦 CA | Molded | View on Amazon |
| DAYCO | 80215 | 🇺🇸 US 🇨🇦 CA | UpperOn Reservoir | View on Amazon |
| GATES | 18324 | 🇺🇸 US 🇨🇦 CA | Molded3/8" x 13 29/32" | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
5 Coolant Hose / Pipe parts for the 2006 Cadillac DTS come from 4 brands — DAYCO, DORMAN, CONTINENTAL and 1 other brand. The "Popular" part is DORMAN 626713.
Listed part numbers: DORMAN 626713, CONTINENTAL 64408 and DAYCO 87903, plus the other parts above.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 603237 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD | 2411325 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
2 Coolant Reservoir parts are listed for the 2006 Cadillac DTS, from DORMAN and GPD.
Listed part numbers: DORMAN 603237 and GPD 2411325.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 12R04 | 🇺🇸 US 🇨🇦 CA | Professional | View on Amazon |
| DORMAN | 54216 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MOTORAD | T61 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable.
3 Coolant Reservoir Cap parts are listed for the 2006 Cadillac DTS, from ACDELCO, DORMAN and MOTORAD.
Listed part numbers: ACDELCO 12R04, DORMAN 54216 and MOTORAD T61.
Coolant Reservoir Retainer / Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 961363 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Coolant Reservoir retainers and clips.
This group shows a single part: DORMAN 961363.
Cooling Fan Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| US MOTOR WORKS | 16789 | 🇺🇸 US 🇨🇦 CA | Better Control | View on Amazon |
| US MOTOR WORKS | 16795 | 🇺🇸 US 🇨🇦 CA | Best Control | View on Amazon |
This table covers the Cooling Fan control modules.
US MOTOR WORKS supplies both parts for the 2006 Cadillac DTS.
Listed part numbers: US MOTOR WORKS 16789 and US MOTOR WORKS 16795.
Cooling System Tester Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | 31431 | 🇺🇸 US 🇨🇦 CA | Cooling System Pressure | View on Amazon |
| GATES | 31391 | 🇺🇸 US 🇨🇦 CA | Cooling System PressureRadiator Cap | View on Amazon |
| MOTORAD | 3128 | 🇺🇸 US 🇨🇦 CA | StandardRadiator Cap Adapter | View on Amazon |
| MOTORAD | 3127 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
This table covers the adapters used to pressure-test this cooling system.
4 Cooling System Tester Adapter parts for the 2006 Cadillac DTS come from 2 brands — GATES and MOTORAD.
Listed part numbers: GATES 31431, GATES 31391 and MOTORAD 3128, plus the other parts above.
Hose Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 21999650 | 🇺🇸 US 🇨🇦 CA | RESERVOIR HOSE | View on Amazon |
This table covers the Hose clamps.
This group shows a single part: GM GENUINE 21999650.
Buying Cooling System Parts for a 2006 Cadillac DTS
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.
- Confirm you have the 4.6L V8 engine — every part on this page is matched to it.
- 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 Coolant Hose / Pipe .
Frequently Asked Questions
How many cooling system parts fit the 2006 Cadillac DTS?
Our catalog currently lists 34 cooling system parts for the 2006 Cadillac DTS across 8 subcategories and 14 brands, covering the 4.6L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2006 Cadillac DTS?
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 2006 Cadillac DTS 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 2006 Cadillac DTS?
Every part on this page is matched to the 4.6L V8 engine. 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 2006 Cadillac DTS
Cooling System Parts for Other Cadillac DTS Years
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