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NHTSA ID Number: 10203655
Manufacturer Communication Number: TSB 21-2408
Summary
Some 2015-2019 Transit vehicles equipped with a 3.7L engine and block heater may exhibit a repeat coolant leak from a deteriorated O-ring and/or intake manifold thermostat housing. This may be due to the block heater in the thermostat housing. To correct the condition, install a block heater service kit in the engine block.
5 Affected Products
Vehicle
| MAKE | MODEL | YEAR |
| FORD | TRANSIT | 2015-2019 |
Model:
2015-2019 Transit
Engine: 3.7L
Issue: Some 2015-2019 Transit vehicles equipped with a 3.7L engine and block heater may exhibit a repeat coolant leak from a deteriorated O-ring and/or intake manifold thermostat housing. This may be due to the block heater in the thermostat housing. To correct the condition, install a block heater service kit in the engine block.
Action: Follow the Service Procedure steps to correct the condition if the vehicle meets all of the following criteria:
- 2015-2019 Transit
- 3.7L engine
- Equipped with a block heater in the thermostat housing
- Coolant leak from thermostat housing
Parts
| Service Part Number | Quantity | Description |
| KK4Z-6D008-A | 1 | Block Heater Service Kit |
VC-13DL-G  |
As Needed | Motorcraft® Yellow Concentrated Antifreeze/Coolant (All Markets Except Canada) |
CVC-13DL-G |
As Needed | Motorcraft® Yellow Concentrated Antifreeze/Coolant (Canada Only) |
Quantity refers to the amount of the service part number required to repair the vehicle.
As Needed indicates the amount of the part may vary and/or is not a whole number. Parts can be billed out as nonwhole numbers, including less than 1.
Parts
Parts To Inspect And Replace Only If Necessary
| Service Part Number | Quantity | Description |
| AT4Z-8527-A | If Needed | Thermostat Housing O-ring Seal |
| JL3Z-9424-B | If Needed | Lower Intake Manifold |
| BL3Z-8A586-G | If Needed | Thermostat Housing |
| 7T4Z-8590-A |
If Needed | O-ring Seal |
| AT4Z-9H486-A | If Needed | Upper Intake Manifold Gasket |
If Needed indicates the part is not mandatory
Service Procedure
- Remove the existing cooling system block heater and wire harness from the thermostat housing. Refer to Workshop Manual (WSM), Section 303-03A.
- Remove the thermostat housing. Refer to WSM, Section 303-03A.
- Inspect the thermostat housing, thermostat housing O-ring seal, and intake manifold tube for damage and replace as necessary. Refer to WSM, Section 303-03A.
- Install the immersion block heater and harness kit. Refer to the instruction sheet included in the kit.
- Fill and bleed the cooling system. Refer to WSM, Section 303-03A, General Procedures, Engine Cooling System Draining, Vacuum Filling and Bleeding.
SEOCONTENT-START
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TECHNICAL SERVICE BULLETIN
2015-2019 Transit – 3.7L – Block Heater – Coolant Leak From The Thermostat Housing
21-2408
18 November2021
Model:
Ford
2015-2019 Transit
Engine: 3.7L
Issue:
Some 2015-2019 Transit vehicles equipped with a 3.7L engine and block heater may exhibit a repeat coolant leak from a deteriorated O-ring and/or intake manifold thermostat housing. This may be due to the block heater in the thermostat housing. To correct the condition, install a block heater service kit in the engine block.
Action:
Follow the Service Procedure steps to correct the condition if the vehicle meets all of the following criteria:
• 2015-2019 Transit
• 3.7L engine
• Equipped with a block heater in the thermostat housing
• Coolant leak from thermostat housing
Parts
Service Part Number
Quantity
Description
KK4Z-6D008-A
1
Block Heater Service Kit
VC-13DL-G
As Needed
Motorcraft® Yellow Concentrated Antifreeze/Coolant (All Markets Except Canada)
CVC-13DL-G
AsNeeded
Motorcraft® Yellow Concentrated Antifreeze/Coolant (Canada Only)
Quantity refers to the amount of the service part number required to repair the vehicle.
As Needed indicates the amount of the part may vary and/or is not a whole number. Parts can be billed out as non-whole numbers, including less than 1.
Parts
Parts To Inspect And Replace Only If Necessary
Service Part Number
Quantity
Description
AT4Z-8527-A
If Needed
Thermostat Housing O-ring Seal
JL3Z-9424-B
If Needed
Lower Intake Manifold
BL3Z-8A586-G
If Needed
Thermostat Housing
7T4Z-8590-A
If Needed
O-ring Seal
AT4Z-9H486-A
If Needed
Upper Intake Manifold Gasket
If Needed indicates the part is not mandatory.
Warranty Status:
Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty(SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not altered by a TSB. NVLW/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.
Labor Times
Description
Operation
Time
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No.
2015-2019 Transit 3.7L: Inspect And Install Immersion Block Heater Kit, Includes Time To Replace The Thermostat Housing And/Or Gasket As Necessary (Do Not Use With Any Other Labor Operations)
212408A
2.3Hrs.
2015-2019 Transit 3.7L: Inspect And Install Immersion Block Heater Kit, Includes Time To Replace The Thermostat Housing And/Or Gasket And Intake Manifold Tube As Necessary (Do Not Use With Any Other Labor Operations)
212408B
3.3Hrs.
Repair/Claim Coding
Causal Part:
9J447
Condition Code:
D8
Service Procedure
1.
Remove the existing cooling system block heater and wire harness from the thermostat housing. Refer to Workshop Manual (WSM), Section 303-03A.
2.
Remove the thermostat housing. Refer to WSM, Section 303-03A.
3.
Inspect the thermostat housing, thermostat housing O-ring seal, and intake manifold tube for damage and replace as necessary. Refer to WSM, Section 303-03A.
4.
Install the immersion block heater and harness kit. Refer to the instruction sheet included in the kit.
5.
Fill and bleed the cooling system. Refer to WSM, Section 303-03A, General Procedures, Engine Cooling System Draining, Vacuum Filling and Bleeding.
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
21-2408
18 November 2021
https://www.nhtsa.gov/recalls?nhtsaId=10203655
MC-10203655-0001.pdf 125.692KB
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- Yellow-colored, longer-life, ethylene glycol-based antifreeze/coolant for use in gasoline and diesel engines
- Provides year-round antifreeze, anti-boil and corrosion protection
- Ready-to-use; no need to add water - the 50/50 mixture of coolant and treated (purified) water provides freeze protection down to -34°F (-37°C) and boiling protection up to 265°F (129°C)
- Do not mix different colors or types of coolant in your vehicle
- Contains a bittering agent
- Yellow-colored, longer-life, ethylene glycol-based antifreeze/coolant for use in gasoline and diesel engines
- Provides year-round antifreeze, anti-boil and corrosion protection
- 50/50 mixture of coolant and distilled water provides freeze protection down to -34°F (-37°C) and boiling protection up to 265°F (129°C)
- Do not mix different colors or types of coolant in your vehicle
- Contains a bittering agent
- Country Of Origin: United States
- Model Number: VC-13DL-G
- Item Package Dimension: 10.0" L x 9.0" W x 8.0" H
- Item Package Weight: 8.0 lb
- Geniune OEM part
- Part number: VC-13-G
- Package Weight: 4.468 kilograms
- Included components: ANTI-FREEZE
- 1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.
- PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components
- DESIGNED FOR NORTH AMERICAN VEHICLES: Recommended for use with Ford, Chrysler, and GM vehicles that require an orange organic acid technology formula
- GUARANTEED: When installed as part of a complete flush and fill, PEAK guarantees this coolant will provide service life protection of up to 150,000 miles or 5 years.
- 50/50 PREDILUTED FOR QUICK TOP OFFS: Already prediluted to make topping off your cooling system a breeze
- UNSURPASSED FREEZE PROTECTION AND ANTI-BOIL PERFORMANCE outperforms industry standards
- HYBRID ORGANIC ACID TECHNOLOGY FIGHTS RUST, SCALE & CORROSION while protecting all cooling system metals (including aluminum)
- HIGH-QUALITY ADDITIVES PROTECT AGAINST LEAKS and won’t harm gaskets, hoses, plastics or original vehicle finish
- PRE-MIXED YELLOW FORMULA IS READY-TO-USE in a 50/50 ratio with deionized water to protect all modern engine components from winter freezing (-34F) and summer boiling (265F).
- 5 YEAR/150,000 MILE GUARANTEE protects against engine failure caused by freeze-ups or boil-overs
- Yellow-colored, longer-life, ethylene glycol-based antifreeze/coolant for use in gasoline and diesel engines
- Provides year-round antifreeze, anti-boil and corrosion protection
- A 50/50 mixture of coolant and distilled water provides freeze protection down to -34°F (-37°C) and boiling protection up to 265°F (129°C)
- Do not mix different colors or types of coolant in your vehicle
- Contains a bittering agent
- UNSURPASSED FREEZE PROTECTION AND ANTI-BOIL PERFORMANCE outperforms industry standards
- ORGANIC ACID TECHNOLOGY RESISTS CORROSION, SCALE AND RUST while protecting all cooling system metals (including aluminum)
- HIGH-QUALITY ADDITIVES PROTECT AGAINST LEAKS and won’t harm gaskets, hoses, plastics or original vehicle finish
- PRE-MIXED ORANGE FORMULA IS READY-TO-USE in a 50/50 ratio with deionized water to protect all modern engine components from winter freezing (-34F) and summer boiling (265F).
- CONTAINS ALUGARD PLUS FOR COMPATIBLITY WITH ALL ETHYLNE GLYCOL-BASED COOLANTS in automobiles and light duty trucks.Fit Type: Universal
- FIGHTS CORROSION, SCALING AND RUST while protecting all cooling system metals (including aluminum)
- HIGH-QUALITY ADDITIVES PROTECT AGAINST LEAKS and won’t harm gaskets, hoses, plastics or original vehicle finish
- PRE-MIXED YELLOW FORMULA IS READY-TO-USE in a 50/50 ratio with deionized water to protect all modern engine components from winter freezing (-34F) and summer boiling (265F).
- To use it in all makes and models designed to use ASTM D3306
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