cooling

Radiator

for 2002 Dodge Viper 8.0L V10 · RWD

Difficulty

Moderate

Time

3.5 h

Tools

Steps

🔍Draft — verification in progress. This procedure was built from OLP's spec database on September 13, 2026 and is queued for line-by-line review by Chris Hackleman — master technicians with 20+ years each. That review typically completes within 3 days of generation, and this banner changes to a verified badge the moment it does. Until then, cross-check every torque value and fluid capacity against the factory manual, and stop if anything looks unsafe. If something looks off, report it below — a real person reads every report.

Complete removal and replacement of the radiator assembly on a 1992 Dodge Viper RT/10, including coolant drain, fan shroud removal, hose disconnection, and radiator extraction.

Warnings

⚠️Never open the cooling system when the engine is hot. Pressurized coolant can cause severe burns. Allow the engine to cool completely before beginning work.

⚠The 1992 Viper's V10 engine runs extremely hot. Even after cooling, components near the exhaust manifolds may retain heat for extended periods.

⚠Ethylene glycol coolant is toxic and attractive to animals. Collect all drained coolant in sealed containers and dispose of properly at an approved recycling facility.

ℹ️The 1992 Viper RT/10 has no air conditioning system from the factory. If an aftermarket A/C system has been installed, additional condenser removal may be required.

Tools required

Socket set (metric)Essential

Wrench set (metric)Essential

Drain pan (minimum 6 gallon capacity)Essential

Hose clamp pliers

Flathead screwdriverEssential

Torque wrenchEssential

FunnelEssential

Shop towelsEssential

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Parts

Radiator assembly × 1 — Use OEM specification
Radiator cap × 1 — Use OEM specification
Upper radiator hose × 1 — Reuse if undamaged
Lower radiator hose × 1 — Reuse if undamaged
Hose clamps × 4 — Worm-gear style, various sizes

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Fluids

Ethylene glycol 50/50 coolant — 24 qt

Preparation

Park the vehicle on level ground and engage the parking brake.
Allow the engine to cool completely for at least 2 hours after operation.
Disconnect the negative battery cable to prevent accidental fan engagement.
Remove the hood by unbolting the four hinge bolts (two per side) to improve access to the radiator area. Mark hinge positions for reinstallation alignment.
Place a large drain pan beneath the radiator drain petcock location on the driver's side of the radiator.

Procedure

1
Drain the cooling system
Slowly remove the radiator cap by turning counterclockwise to release any residual pressure. Locate the drain petcock on the driver's side lower corner of the radiator. Open the petcock by turning counterclockwise and allow coolant to drain completely into the drain pan. Once drained, close the petcock hand-tight.
Torque spec
Drain Petcock5 Nm (4 lb-ft)
2
Remove the air intake assembly
Disconnect the air intake tube from the throttle body by loosening the hose clamp. Remove the air filter housing by unbolting the 3 mounting fasteners and disconnecting any breather hoses. Set the entire assembly aside to provide clear access to the upper radiator area.
3
Disconnect the upper radiator hose
Using hose clamp pliers or a flathead screwdriver, loosen the hose clamps at both the radiator neck and thermostat housing ends of the upper radiator hose. Twist the hose gently to break the seal, then pull it free from both connections. Inspect the hose for cracks or deterioration and replace if necessary.
Torque spec
Upper/Lower Hose Clamps3 Nm (2 lb-ft)
4
Disconnect the lower radiator hose
Access the lower radiator hose from underneath the vehicle if needed. Loosen the hose clamps at both the radiator outlet and water pump inlet. Twist and remove the hose. Be prepared for residual coolant to drain from the hose and engine block.
Torque spec
Upper/Lower Hose Clamps3 Nm (2 lb-ft)
5
Disconnect the coolant overflow hose
Locate the small overflow hose connected to the radiator filler neck. Loosen or remove the clamp and pull the hose free from the radiator. Leave the other end attached to the overflow reservoir.
6
Disconnect the electric fan wiring
Locate the electrical connector for the electric cooling fan mounted on the radiator shroud. Press the release tab and disconnect the connector. Secure the wiring harness away from the radiator area.
7
Remove the fan shroud and electric fan assembly
The fan shroud is mounted to the radiator with 4 bolts around the perimeter. Remove these mounting bolts and carefully lift the fan shroud with the electric fan attached straight up and out of the engine bay. The fan assembly is heavy and awkward; use caution to avoid damaging radiator fins or fan blades.
8
Remove the radiator mounting hardware
Locate the radiator mounting brackets at the top of the radiator core support. Remove the 2 upper mounting bolts that secure the radiator to the core support. The radiator sits on lower rubber isolators that do not require bolt removal.
Torque spec
Radiator Mount Bolts12 Nm (9 lb-ft)
9
Extract the radiator
Carefully tilt the top of the radiator toward the engine and lift it straight up and out of the engine bay. Guide the lower radiator outlets clear of the frame rails and core support. Be cautious not to damage the radiator fins on surrounding components. Inspect the lower rubber mounting isolators and replace if cracked or deteriorated.
10
Install the new radiator
Ensure the lower rubber isolators are properly seated in the core support. Carefully lower the new radiator into position, seating the lower mounting tabs into the rubber isolators. Align the upper mounting bracket holes with the core support.
11
Secure the radiator mounting hardware
Install the 2 upper radiator mounting bolts and tighten to specification. Ensure the radiator is seated squarely and not making metal-to-metal contact with the core support.
Torque spec
Radiator Mount Bolts12 Nm (9 lb-ft)
12
Reinstall the fan shroud and electric fan assembly
Position the fan shroud with the electric fan over the radiator, aligning the mounting holes. Install the 4 shroud mounting bolts and tighten securely. Reconnect the electric fan wiring connector.
13
Reconnect all coolant hoses
Connect the lower radiator hose to both the radiator outlet and water pump inlet. Position new hose clamps and tighten to specification. Connect the upper radiator hose to both the radiator neck and thermostat housing, install clamps and tighten to specification. Reconnect the overflow hose to the radiator filler neck and secure with a clamp.
Torque spec
Upper/Lower Hose Clamps3 Nm (2 lb-ft)
14
Refill the cooling system
Install a new radiator cap. Fill the radiator through the filler neck with 50/50 ethylene glycol coolant until full. Fill the overflow reservoir to the COLD mark. Start the engine and allow it to reach normal operating temperature with the radiator cap OFF. As the thermostat opens, the coolant level will drop; continue adding coolant to keep the radiator full. Once the electric fan cycles on and off, turn off the engine and allow it to cool. Top off the radiator and overflow reservoir as needed.
15
Final checks and reassembly
With the engine cool, install the radiator cap securely. Reinstall the air intake assembly and connect all related hoses. Reconnect the negative battery cable. If removed, reinstall the hood using the marked hinge positions and torque the hinge bolts securely.

Reassembly

Ensure all hose clamps are properly tightened and positioned to prevent leaks.
Verify the electric fan connector is fully seated and the wiring is routed away from moving components.
Double-check that the overflow hose is connected and not kinked.
Confirm the radiator cap is fully seated and locked in position.

Verification

Start the engine and visually inspect all hose connections and the radiator drain petcock for leaks while the engine warms up.
Allow the engine to reach normal operating temperature and verify the electric cooling fan activates automatically.
After the fan cycles, check the coolant level in both the radiator and overflow reservoir; top off if necessary.
Take the vehicle for a test drive and monitor the temperature gauge to ensure normal operating temperature is maintained.
After the engine cools, perform a final visual inspection for any coolant leaks and recheck coolant levels.