Genuine GM LS Hi Pressure Oil Pump
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Genuine GM LS High Pressure Oil Pump (SKU 12710303)
Suits: Non-AFM GM LS engines such as LS1, LS2, LS3, LS6, L98 and similar variants.
Does not suit: L76/L77 AFM or LSA engines.
The genuine GM 12710303 high-pressure pump is an OEM-quality solution for LS builds that need reliable oil pressure at idle and high RPM. It’s ideal for performance street, track day, and towing applications where consistent lubrication is critical.
Features & Benefits
- Genuine GM part: Proven OEM fit, finish and durability.
- High-pressure calibration: Helps maintain stable pressure across a wider operating range.
- Direct fit for non-AFM LS: Works with standard front-mounted LS oil pump architecture.
- Build confidence: Suitable for refreshed stock engines through to mild performance packages.
Part Number
- 12710303 – Genuine GM LS High Pressure Oil Pump
Fitment Notes
- Designed for non-AFM LS engines (e.g. LS1/LS2/LS3/LS6/L98).
- Not compatible with L76/L77 AFM or LSA engines.
- Verify sump, pickup and accessory drive combinations during mock-up.
- Use the correct pickup tube O-ring for your pickup design (see below).
Installation Tips
- Inspect and replace the pickup O-ring; lightly lubricate before assembly.
- Seat the pickup squarely into the pump; check pickup-to-pan clearance (commonly ~6–8 mm).
- Prime the pump on assembly and use quality oil on first start.
- Follow OEM torque specs and alignment procedures.
Recommended With (sold separately)
- GM Oil Pickup O-Ring – 12557752 (Blue) or 12584922 (Red) to suit your pickup
- PUG001 Pickup Tube Girdle – reinforces the pickup-to-pump joint
- Fresh engine oil and filter for run-in
Note: Professional installation is recommended. Confirm compatibility with your specific sump, pickup and baffle configuration before final assembly.
| Product Name | Genuine GM LS Hi Pressure Oil Pump |
|---|---|
| Brands | GM |
| Engine | ChevLS, Chev LS7, Chev LS 5.3L (15° Heads), Chev LS (15° Heads), Chev LT1, GM / LS, Holden GEN III 5.7 LITRE V8, LS 5.7L, LS 5.7L and 6.0L V8 |
| Make | GM, Holden |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
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Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
When should I upgrade the oil pump or gears?
High rpm, high boost or track use normally justify upgrading the pump or billet gears, especially on engines known for oil pump weakness.
Do I need an oil restrictor or head drain?
Some DOHC turbo engines benefit from a restrictor and head drain to control oil pooling at high rpm. Whether you need one depends on your build.
What LS engine models is the Genuine GM LS Hi Pressure Oil Pump suitable for?
The Genuine GM LS Hi Pressure Oil Pump (SKU 12710303) is designed for non-AFM LS engines, including LS1, LS2, LS3, LS6, and L98. It is not compatible with L76/L77 AFM or LSA engines.
What are the installation considerations for the oil pump?
When installing the oil pump, ensure to inspect and replace the pickup O-ring, lubricate it lightly before assembly, and check the pickup-to-pan clearance, which is typically around 6–8 mm. It's also crucial to prime the pump during assembly and use quality oil on the first start.
What should I verify during the mock-up phase of installation?
During mock-up, verify the compatibility of the sump, pickup, and accessory drive combinations to ensure proper fitment. It's also important to use the correct pickup tube O-ring for your specific pickup design.
What additional components are recommended for use with this oil pump?
It is recommended to use the GM Oil Pickup O-Ring (part numbers 12557752 or 12584922) that suits your pickup, and consider the PUG001 Pickup Tube Girdle for added reinforcement at the pickup-to-pump joint. Fresh engine oil and a filter for run-in are also advisable.
What are the benefits of using the Genuine GM LS Hi Pressure Oil Pump?
The Genuine GM LS Hi Pressure Oil Pump offers reliable oil pressure at idle and high RPM, making it ideal for performance street, track day, and towing applications. Its high-pressure calibration helps maintain stable pressure across a wider operating range, ensuring consistent lubrication for your engine.
