Victorious · Engine Systems · AJ20P6 Turbo
Crankcase Vent Valve – 3.0L Turbo Petrol (AJ20P6)
OEM-spec crankcase breather valve for Range Rover, Range Rover Sport, Discovery 5, Velar, and Defender. Direct replacement, precision engineered.
AJ20P6 Engine
2013–2026
OEM Replacement
Petrol Turbo
Direct Fit
Overview
The 3.0L turbocharged petrol engine that powers Range Rover (2013–2026), Range Rover Sport (2014–2026), Discovery 5 (2017–2024), Range Rover Velar (2017–2022), and Defender (2020–2026) demands precision in every component—especially the crankcase ventilation system.
This crankcase vent valve regulates pressure inside the engine block, preventing oil sludge buildup and extending engine life. Over time, the factory valve can stick, crack, or degrade, leading to rough idle, increased blow-by, and potential sump oil seal failure.
Our replacement valve meets OE specifications exactly, restoring proper crankcase breathing and fuel efficiency. Direct bolt-on installation—no modifications required.
What's Included
🔧
Crankcase Vent Valve
OE-specification component
✓
Installation Hardware
Gaskets and fasteners included
📋
Fitment Guide
Vehicle-specific instructions
🛡️
12-Month Warranty
Full coverage on defects
Why Choose This Valve
- OEM part numbers LR121750 & LR164405—exact factory specifications
- Prevents oil sludge, reduces blow-by, improves idle quality
- Direct replacement—no drilling, no modification
- Tested on AJ20P6 turbocharged petrol engines
- Precision machined for reliable pressure regulation
- Supports fuel efficiency and engine longevity
- 30-day money-back guarantee if not satisfied
- Worldwide shipping via DHL, FedEx, UPS, TNT
- Expert support: +44 203 943 9919 Mon–Fri 9am–7pm
- 4.9/5 stars from 12,300+ verified buyers
Compatibility Matrix
| Vehicle |
Year Range |
Engine |
Fitment |
| Range Rover Vogue |
2013–2020 (L405) |
3.0L Turbo (AJ20P6) |
Direct Fit |
| Range Rover Vogue |
2022–2026 (L460) |
3.0L Turbo (AJ20P6) |
Direct Fit |
| Range Rover Sport |
2014–2020 (L494) |
3.0L Turbo (AJ20P6) |
Direct Fit |
| Range Rover Sport |
2022–2026 (L461) |
3.0L Turbo (AJ20P6) |
Direct Fit |
| Discovery 5 |
2017–2024 |
3.0L Turbo (AJ20P6) |
Direct Fit |
| Range Rover Velar |
2017–2022 |
3.0L Turbo (AJ20P6) |
Direct Fit |
| Defender 110 |
2020–2026 (L663) |
3.0L Turbo (AJ20P6) |
Direct Fit |
| Non-turbo or other engines |
Any |
Other |
Not Compatible |
Always verify your engine code before purchase. If unsure, contact us with your VIN—we'll confirm fitment free of charge.
Installation
Difficulty: Intermediate | Time: 45–90 minutes
-
Disconnect the negative battery terminal to prevent electrical shorts.
-
Locate the crankcase vent valve on the driver side of the engine block (consult your service manual for exact position).
-
Remove hose clamps connecting the valve to the intake manifold and crankcase.
-
Unbolt the old valve (typically 2–3 bolts; use a torque wrench set to 8–10 Nm).
-
Clean the mounting surface with a soft brush and degreaser to remove oil residue.
-
Install the new valve with fresh gasket; apply a thin coat of engine oil to the seal.
-
Reconnect hoses and secure with new clamps; no kinks allowed.
-
Reconnect battery, start engine, and check for leaks at idle for 2–3 minutes.
⚠️ Important: Do not overtighten bolts—AJ20P6 engines use aluminium block. Excessive torque risks thread damage. Use a calibrated torque wrench. If you spot oil weeping after installation, stop the engine and recheck gasket seating.
Ready to Restore Crankcase Health?
OEM-spec vent valve. Precision engineered for AJ20P6 turbocharged petrol engines. Direct fit, 30-day money-back guarantee, 12-month warranty.
Shop Now
Use code 22GET20 for 20% off any 2 items.
⭐ 4.9/5 stars from 12,300+ reviews
🚚 Worldwide shipping via DHL, FedEx, UPS, TNT
📞 Expert support +44 203 943 9919
🛡️ 30-day guarantee – no questions asked
Disclaimer: Victorious Automotive is an independent aftermarket supplier and is not affiliated with, endorsed by, or connected to Land Rover, Jaguar Land Rover (JLR), or Range Rover. All vehicle names, logos, and marks are the property of their respective owners. Product compatibility information is provided for reference only. Always verify fitment with your vehicle's VIN before purchase. Victorious Automotive assumes no liability for improper installation or misuse.
