Victorious Automotive · Engine Parts · Lubrication System
Oil Regulator Non Return Valve – Land Rover & Jaguar
Maintain precise oil regulation and prevent backflow across Land Rover Defender, Discovery, Range Rover Sport, Velar, and select Jaguar models.
LR077674
AJ811445
2006–2019
Direct Fit OE
Brass / Steel
12-Month Warranty
Overview
The oil regulator non-return valve is a critical engine component that maintains optimal oil pressure while preventing backflow into the crankcase. This Partsmost OE-equivalent unit is engineered for Land Rover Defender (1987–2006), Discovery Series 2, Range Rover Vogue and Sport, Range Rover Velar, and select Jaguar XK, XF, XJ, and E-PACE models. Whether you're running a 2.5L turbodiesel, 3.0L turbo petrol, or 5.0L naturally aspirated V8, this valve ensures consistent oil delivery and engine protection across all operating conditions.
Replacing a faulty oil regulator valve prevents oil starvation, reduces sludge accumulation, and restores oil pressure stability. Symptoms of failure include low oil pressure warnings, rough idle, and reduced engine responsiveness. OE quality means direct compatibility with OEM oil galleries and filtration systems—no adapters, no modifications.
With 30-day money-back guarantee and a 12-month warranty, Victorious Automotive ensures peace of mind on every order. Most clients report installation within 45 minutes once the timing cover or valve housing is accessed.
What's Included
📦
Oil Regulator Valve
OE AJ811445 / LR077674 specification
🔧
Gasket & Seals
Pre-fitted for installation readiness
📋
Install Guide
Vehicle-specific fitment reference
✓
Warranty Certificate
12-month global coverage included
Key Highlights
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OE-Equivalent Build – Brass/steel construction matches original equipment density and material spec
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Non-Return Mechanism – Dual-stage check design prevents backflow under all RPM ranges
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Direct Fit – No machining, no spacers, drops straight into OEM oil gallery
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Pressure Rated – Tested to 5.0 bar+ cracking pressure; optimized for stock and mild tuning
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Corrosion Resistant – Nickel-plated brass; compatible with conventional and synthetic oils
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Plug & Play – OEM gaskets included; no fluid leakage when properly installed
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Low Maintenance – No moving parts to service; sealed for engine life
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Temperature Stable – Rated -40°C to 120°C; maintains function across seasonal extremes
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Global Shipping – DHL, FedEx, UPS; arrives in 5–10 business days worldwide
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30-Day Money Back – Full refund guarantee if fitment or function doesn't meet expectations
Compatibility Chart
| Vehicle Model |
Year Range |
Engine |
Fit Status |
| Land Rover Defender |
1987–2006 |
2.5L 5-Cyl Turbo Diesel |
Direct Fit |
| Land Rover Discovery 2 |
1998–2004 |
2.5L 5-Cyl Turbo Diesel |
Direct Fit |
| Range Rover Vogue |
2010–2012 |
5.0L V8 NA Petrol |
Direct Fit |
| Range Rover Sport |
2014+ |
3.0L I6 Turbo Diesel |
Direct Fit |
| Discovery Sport |
2015+ |
2.0L Turbo Petrol |
Direct Fit |
| Range Rover Velar |
2017+ |
3.0L I6 Turbo Petrol |
Direct Fit |
| Discovery (L462) |
2017+ |
3.0L I6 Turbo Petrol |
Direct Fit |
| Jaguar XK |
2006–2014 |
5.0L V8 |
Direct Fit |
| Jaguar XF (Pre-2016) |
2009–2015 |
3.0L |
Direct Fit |
| Jaguar XJ |
2010–2019 |
5.0L V8 |
Direct Fit |
| Jaguar XF (2016+) |
2016+ |
3.0L |
Direct Fit |
| Jaguar E-PACE |
2017+ |
2.0L Diesel |
Direct Fit |
Installation Notes
Difficulty: Intermediate | Time: 45–60 minutes
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Disconnect battery – Remove negative terminal to eliminate electrical risk
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Drain oil (optional) – If valve sits above oil level, skip; otherwise drop 1–2 quarts
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Remove timing cover or valve housing gasket – Locate OEM valve body; usually behind fan shroud or near cylinder head
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Unbolt old valve – Typically 1–3 fasteners (8mm–12mm); catch any residual oil with a pan
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Inspect bore – Clean gallery bore gently with lint-free cloth; ensure no debris remains
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Install new gasket – Position pre-fitted gasket on housing; apply light film of engine oil to sealing surface
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Bolt down new valve – Torque to 15–20 Nm (10–15 ft-lb); do not over-tighten brass components
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Refit housing gasket – Align and secure timing cover or access panel with factory torque spec
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Refill oil and check level – Top up to cold mark; run engine 2–3 minutes and re-check
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Clear any fault codes – If oil pressure sensor was triggered, scan with OBD tool and clear
⚠ Warning: Engine oil may be hot during work. Allow 15 minutes cool-down before accessing valve housing. Always use OE-spec torque values; over-tightening can damage brass seals and cause leakage.
Ready to Restore Oil Pressure?
Don't ignore low oil pressure warnings. A faulty valve compromises engine protection and fuel economy. Order your OE-equivalent regulator today and get 20% off when you buy two or more Victorious parts.
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🚚 Global Shipping – DHL, FedEx, UPS
✓ 30-Day Guarantee – Full money-back promise
Victorious Automotive is an independent aftermarket parts supplier. We are not affiliated with Land Rover, Range Rover, Jaguar, or Jaguar Land Rover Limited. All vehicle model names, designations, and trademarks are property of their respective manufacturers. This product is OE-equivalent and compatible with original equipment part numbers LR077674, AJ811445, and ERR4598, but is not an original part. Warranty covers manufacturing defects only; installation, labour, and incidental engine damage are not covered. Always verify part number and engine type before purchase. Consult your vehicle service manual for precise installation procedure.
