Radium Baffled Oil Cap - Holden Commodore/HSV LSX V8
Radium Baffled Oil Cap - Holden Commodore/HSV LSX V8
Universal fit
No vehicle selection needed.
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
Fitment not confirmed
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
In Melbourne? Fit it in our workshop.
We fit parts in-house at the RevZone workshop. Book a time and bring your car in.
Description
Radium Baffled Oil Cap - Holden Commodore / HSV LSX V8
Confirmed Engine Compatibility:
- LS1, LS2, LS3, LS4, LS6, LS7, LS9, LSA
- L76, L99, L9H
- LT1, LT2, LT4
Note: Other compatible engines not listed above may also be supported.
The Radium Engineering Baffled Oil Cap is an anodised billet aluminium direct replacement for the OEM oil cap on LSX and LT-series V8 engines. Designed to consolidate the two different oil cap styles used across LS-based engines, this cap features a top-mounted 7/8"-14 threaded port (10AN ORB) and an internal stainless steel baffle for crankcase venting air/oil separation.
Out of the box, the 10AN ORB port is plugged — making this a direct drop-in replacement with no additional parts required. Optionally, the plug can be removed to expose the cleanable and reusable stainless steel baffle, allowing the cap to be used as part of a custom crankcase venting setup.
Features
- Direct OEM oil cap replacement — no modifications required
- Anodised billet aluminium construction
- Top-mounted 7/8"-14 threaded port (10AN ORB) — accepts standard 10AN ORB adapter fittings
- Internal cleanable and reusable stainless steel baffle for air/oil separation
- Includes 10AN ORB plug to block off the baffle port when not in use
- Compatible with both LS-style oil cap fitments
Optional Crankcase Venting
Remove the 10AN ORB plug to expose the stainless steel baffle and connect a 10AN ORB fitting of your choice to create a custom crankcase venting setup. Compatible with Radium catch cans, roll-over valves, and other 10AN ORB crankcase vent accessories.
Part Number:
- 20-0539 — Radium Baffled Oil Cap (Holden Commodore / HSV LSX V8)
Why Radium Engineering?
- ✅ Manufactured in the USA to motorsport-grade tolerances
- ✅ CNC-machined billet aluminium components built for performance and longevity
- ✅ Trusted by high-power build tuners and race teams worldwide
- ✅ Bolt-on fitment — no cutting, drilling, or fabrication required
- ✅ Compatible with E85, pump petrol, and flex fuel builds across the full LS and LT platform range
Specifications
- Part Number
- 20-0539
- Brand
- Radium Engineering
Shipping
Orders are processed within 1-2 business days (Monday to Friday), and orders placed before 12pm AEST are usually dispatched the same day. Once dispatched, standard shipping takes 3-7 business days and express 1-3, with tracking emailed as your order leaves.
If part of your order is out of stock, we'll contact you with the option to split the shipment or hold it until everything is ready. Read the full shipping policy.
Returns
You have 14 days from delivery to request a return on unused parts in their original packaging. Refunds incur a 15% restocking fee (20% for special orders), or choose store credit and the full purchase value is applied to your account.
Parts that have been test fitted, installed, or used can't be returned, and special-order or overseas-ordered items are assessed case by case. Faulty or incorrectly supplied items are always covered at no cost to you. Read the full returns policy.