Oil Pan Gasket

This procedure covers removal and replacement of the oil pan gasket on a 2019-2024 Toyota RAV4 with 2.5L I4 engine, requiring engine support and front subframe lowering for access.

Warnings

Tools required

Parts

• Oil pan gasket × 1 — Use OEM specification
• Oil drain plug crush washer × 1 — Toyota 90430-12031
• Engine oil filter × 1 — Toyota 04152-YZZA1
• RTV silicone gasket maker × 1 — Toyota Genuine Seal Packing Black or equivalent

Fluids

• Toyota Genuine 0W-20 — 5 qt

Preparation

1. Park vehicle on level surface and engage parking brake
2. Allow engine to cool completely if recently operated
3. Disconnect negative battery terminal
4. Raise vehicle and secure on jack stands at all four corners
5. Remove front engine splash shield and under covers
6. Install engine support fixture across engine bay to support engine weight from above

Procedure

1. 1

   Drain engine oil and remove filter
   Place drain pan under oil pan. Remove oil drain plug with 19mm socket and allow oil to drain completely. Remove oil filter using filter wrench. Inspect drain plug threads and oil pan drain hole for damage. Clean drain plug and install new crush washer.
   ⚠Hot oil can cause burns. Verify engine temperature before proceeding.
   Torque spec

   Oil Drain Plug35 Nm (26 lb-ft)
2. 2

   Remove front exhaust pipe connection
   Disconnect oxygen sensor electrical connectors. Remove the three bolts securing the front exhaust pipe to the exhaust manifold. Support the exhaust pipe and remove the two bolts securing it to the center pipe. Lower the front exhaust section enough to provide clearance for subframe lowering.
3. 3

   Support and lower front subframe
   Place a floor jack under the front subframe with a block of wood to distribute load. Remove the four bolts securing the front subframe to the chassis (two per side). Carefully lower the subframe approximately 2-3 inches. Do not completely remove subframe, only lower enough to access oil pan bolts. Ensure engine support fixture is bearing engine weight.
   ⚠️Verify engine support fixture is properly installed and supporting full engine weight before lowering subframe.
4. 4

   Disconnect oil level sensor
   Locate the oil level sensor on the lower side of the oil pan. Disconnect the electrical connector. Remove the sensor retaining bolt and carefully remove the sensor from the oil pan. Set aside with O-ring for inspection.
5. 5

   Remove oil pan bolts
   Working from the outer edges toward the center, gradually loosen all oil pan bolts in a crisscross pattern. There are approximately 16-18 bolts around the perimeter of the oil pan. Once all bolts are loose, remove them completely and keep organized for reinstallation.
6. 6

   Separate and remove oil pan
   Carefully break the seal between the oil pan and engine block using a plastic gasket scraper. Insert at a corner and gently pry. Work around the perimeter gradually. Do not use metal tools that could damage sealing surfaces. Once seal is broken, carefully lower the oil pan. Tilt as needed to clear the oil pickup tube.
   ⚠Do not damage aluminum sealing surfaces on engine block or oil pan. Use only plastic tools for separation.
7. 7

   Inspect oil pickup tube
   With oil pan removed, inspect the oil pickup tube and O-ring. Check for cracks, damage, or debris. If O-ring shows wear, replace it. Remove the two pickup tube bolts if pickup tube service is needed. Otherwise, leave in place and verify it is secure.
8. 8

   Clean sealing surfaces
   Thoroughly clean all old gasket material and RTV from both the oil pan and engine block sealing surfaces using a plastic scraper. Follow with brake cleaner to remove all oil residue. Surfaces must be completely clean and dry. Inspect for any damage, warping, or cracks. Clean the oil pan interior of any sludge or debris.
9. 9

   Apply RTV and install new gasket
   Apply a continuous 2-3mm bead of RTV silicone gasket maker to the oil pan sealing surface, running inside the bolt holes. Pay special attention to corners and the areas around the oil pickup tube opening. Position the new oil pan gasket onto the oil pan, aligning all bolt holes. Apply additional small dabs of RTV at the front and rear corners where the engine block meets the timing cover and rear main seal housing.
   ℹ️RTV must be applied continuously without gaps. Assembly must occur within 10-15 minutes of RTV application before skin forms.
10. 10

    Install oil pan
    Carefully raise the oil pan into position, ensuring the oil pickup tube enters the pan properly. Align all bolt holes. Hand-thread all oil pan bolts to prevent cross-threading. Once all bolts are started, torque in sequence from the center outward in a crisscross pattern to the specified torque value. Work in two stages: first to 6 Nm, then to final torque.
    Torque spec

    Oil Pan Bolts12 Nm (9 lb-ft)
11. 11

    Reinstall oil level sensor
    Inspect the oil level sensor O-ring and replace if damaged. Install the sensor into the oil pan and hand-thread the retaining bolt. Torque to specification. Reconnect the electrical connector ensuring it clicks securely.
12. 12

    Raise subframe and reconnect exhaust
    Using the floor jack, carefully raise the front subframe back to its original position, aligning bolt holes with chassis mounting points. Install all four subframe mounting bolts and torque to specification in a crisscross pattern. Reconnect the front exhaust pipe to both the exhaust manifold and center pipe using new gaskets. Torque all exhaust fasteners to specification. Reconnect oxygen sensor connectors.
13. 13

    Install new oil filter and fill with oil
    Apply a thin film of clean engine oil to the new oil filter gasket. Hand-thread the filter onto the mounting boss and tighten per filter instructions (typically 3/4 turn after gasket contact). Install oil drain plug with new crush washer and torque to specification. Remove engine support fixture. Fill engine with 5.0 quarts of Toyota Genuine 0W-20 engine oil through the oil filler cap.
    Torque spec

    Oil Drain Plug35 Nm (26 lb-ft)

Reassembly

1. Reinstall front engine splash shields and under covers
2. Lower vehicle from jack stands
3. Reconnect negative battery terminal
4. Allow RTV to cure for minimum 1 hour before starting engine (follow RTV manufacturer specifications)
5. Verify all tools and parts have been removed from engine bay

Verification

• After RTV cure time, start engine and allow to idle. Monitor for leaks around oil pan gasket immediately
• Check oil pressure warning light extinguishes within 2-3 seconds of startup
• Allow engine to reach operating temperature while monitoring for leaks
• Shut off engine and wait 5 minutes, then check oil level on dipstick. Add oil if needed to reach FULL mark
• Inspect underneath vehicle for any oil drips or seepage around oil pan perimeter, drain plug, and oil filter
• Test drive vehicle and recheck for leaks after 50-100 miles of operation

More procedures for this vehicle