Toyota Diesel 2LT 2L-TE 3L 5L 1KZ-TE 1HZ 1HDT OEM Oil Pump Seal 90311-32020

Product Overview

Genuine OEM Toyota Camshaft Seal 90311-32020, compatible with Toyota Land Cruiser, Land Cruiser Prado, Hilux, Hilux Surf, 4Runner, and Hiace models equipped with 1KZ-TE, 2LT, 2L-TE, 3L, 5L, 1HZ, 1HDT, and 1HD-FT diesel engines. On Toyota's diesel engine families, this seal sits at the front of the cylinder head where the camshaft exits through the timing cover, preventing pressurized oil from escaping past the camshaft nose. At 32x46x6mm, the OEM nitrile rubber lip seal is precisely matched to Toyota's diesel camshaft surface specifications and the elevated operating temperatures of turbo-diesel applications. A leaking camshaft seal allows oil to migrate behind the timing belt cover, contaminating the timing belt and creating conditions for premature belt failure on these interference engines. The 90311-32020 is a recommended replacement item during any timing belt service on the diesel engines listed below.

OEM Part Number(s):

• 90311-32020 (current)
• 90311-32019 (superseded)
• 90311-32018 (superseded)
• 90311-32017 (superseded)
• 90311-32001 (superseded)
• 90080-31097 (superseded)

 

Key Features & Benefits

• Stops Camshaft Oil Leaks at the Source: Seals the camshaft nose where it exits the timing cover on 1KZ-TE, 2L-TE, 3L, 5L, 1HZ, 1HDT, and 1HD-FT diesel engines — the most common source of oil contamination on Toyota diesel timing belt systems.
• Recommended Timing Belt Service Item: Timing belt access requires full removal of the timing cover on all these diesel engines; replacing the camshaft seal at the same time adds minutes of labor and eliminates a major oil leak risk for the entire next service interval
• Diesel-Rated Nitrile Construction: Toyota's genuine seal compound withstands the higher operating temperatures and oil pressures inherent to turbo diesel applications — critical for long-term sealing reliability in demanding Land Cruiser and Prado use cases
• Precision 32x46x6mm Dimensions: OEM-specification inner diameter, outer diameter, and lip geometry ensure correct installation depth and sealing contact against the camshaft journal — dimensional deviations in aftermarket seals are the leading cause of repeat camshaft leaks on these engines.

 

Technical Specifications

Part Type: Camshaft Oil Seal (front timing cover)
Toyota Classification: Type T Oil Seal
Dimensions: 32 x 46 x 6 mm (inner diameter x outer diameter x width)
Material: Nitrile rubber lip seal with metal casing
Position: Front of cylinder head, camshaft nose/timing cover
Engine Compatibility: 2L, 2LT, 2L-TE, 3L, 5L, 5LE, 1KZT, 1KZ-TE, 1PZ, 1HZ, 1HDT, 1HD-FT, 1HD-FTE, 1KD-FTV, 2KD-FTV (verify by engine code)

Fitment

Year	Model	Engine
1988–1997	Hilux Pickup (LN105, LN106, LN107, LN110)	2L, 3L diesel
1997–2005	Hilux Pickup (LN165, LN166, LN167, LN172)	2LT, 3L, 5L diesel
1999–2005	Hilux Pickup (KZN165)	1KZ-TE turbo diesel
1988–1993	Hilux Surf / 4Runner (LN130)	2LT turbo diesel
1993–1996	Hilux Surf / 4Runner (KZN130)	1KZ-TE turbo diesel
1995–2002	Hilux Surf (KZN185)	1KZ-TE turbo diesel
1990–1993	Land Cruiser 70 Series (LJ70R, LJ71, LJ78)	2LT, 2L-TE turbo diesel
1990–1996	Land Cruiser 70 Series (HZJ70, HZJ73, HZJ75, PZJ70, PZJ73)	1HZ, 1PZ diesel
1993–1996	Land Cruiser 70 Series (KZJ70R)	1KZ-TE turbo diesel
1990–1998	Land Cruiser 80 Series (HZJ80, HZJ81)	1HZ diesel
1990–1998	Land Cruiser 80 Series (HDJ80, HDJ81)	1HDT, 1HD-FT diesel
1998–2007	Land Cruiser 100 Series (HDJ100, HDJ101)	1HD-FTE turbo diesel
1996–2002	Land Cruiser Prado 90 Series (KZJ90, KZJ95)	1KZ-TE turbo diesel
1996–2009	Land Cruiser Prado 90/120 Series (KZJ90, KZJ95, KZJ120)	1KZ-TE turbo diesel
1993–2004	Hiace (KZH100, KZH110, KZH120)	1KZ-TE turbo diesel
1995–2002	Grand Hiace / Granvia (KCH10, KCH16)	1KZ-TE turbo diesel

Important: This seal is the camshaft seal on all diesel engine applications listed above — it is NOT the front crankshaft seal on these engines. The front crankshaft seal is a separate, larger part with a specific part number for each diesel engine family. Always verify your specific engine code before ordering. For 1KD-FTV and 2KD-FTV common rail diesel engines, verify the the current part number against your EPC,, as later production variants may differ.

Installation & Maintenance

Installation Difficulty: Intermediate
Tools Required: Timing belt removal tools, seal driver or matching 32mm socket, torque wrench, engine degreaser, thin pry tool for old seal removal
Professional Installation: Recommended — timing belt service on these diesel engines is a significant job requiring correct torque sequences and hydraulic tensioner procedures; the camshaft seal replacement adds minimal time when performed alongside a timing belt service

Maintenance Tips:

• Replace this camshaft seal at every timing belt service on these diesel engines, the timing cover must come off anyway, making seal replacement a no-cost-in-labor addition
• Inspect the camshaft journal surface for wear ridges before fitting the new seal — a worn groove will cause the new seal to leak immediately, regardless of OEM quality.
• Lightly coat the seal lip with clean engine oil before installation to prevent scuffing during initial engine startup.
• Press the seal in squarely to the correct depth using a proper driver — do not hammer the seal lip directly or install at an angle.

 

Frequently Asked Questions

Q: Can a leaking camshaft seal damage the timing belt on my Toyota diesel?
A: Yes, and on the 1KZ-TE, this is a serious concern. The camshaft seal sits directly adjacent to the camshaft timing sprocket inside the timing cover. A leaking seal allows oil to soak the timing belt, reducing its tensile strength and causing it to slip on the sprocket teeth. The 1KZ-TE is a known interference engine. A jumped or broken timing belt causes piston-to-valve contact and catastrophic internal engine damage. Oil contamination of the timing belt is one of the most preventable causes of 1KZ-TE engine failure.

Q: What is the difference between the camshaft seal and the injection pump seal on the 1KZ-TE engine?
A: These are two separate seals on the 1KZ-TE. The camshaft seal (90311-32020) seals the camshaft nose at the front of the cylinder head. The injection pump drive seal (90311-58006) is a separate component that seals the injection pump drive shaft. Both seals are accessible during a timing belt service and should be inspected and replaced as needed during the same job to avoid a repeat teardown.

 

Common Symptoms of a Leaking Toyota Diesel Camshaft Seal (90311-32020)

• Oil seeping from the upper front of the engine near the camshaft pulley area, often visible along the timing cover seam
• Oil contamination found on the inside of the timing belt cover or on the timing belt itself during a belt inspection
• Slow oil loss without an obvious external source at the valve cover, oil pan, or rear main seal
• Oily residue or streaking on the front of the engine block below the camshaft pulley
• Burning oil smell from the engine bay during or after operation, particularly on turbo diesel engines, where heat is concentrated near the timing cover