ls engine exhaust manifold – High‑Performance, OEM‑Ready Solution
Engineered for performance tuners, fleet managers, and OEM partners who demand reliable flow, reduced back‑pressure, and cost‑effective sourcing.
Get Free Quote in 24 hThe Real Cost of a Low‑Quality Exhaust Manifold
When the exhaust manifold fails to meet LS engine tolerances, you face:
- Overpriced stock parts – average $250 + per unit, inflating your BOM.
- Premature cracking due to poor alloy composition, leading to up to 15 % downtime.
- Inconsistent exhaust flow, which can reduce horsepower by 3‑5 % and raise fuel consumption.
According to a 2025 SAE survey, 42 % of performance shops reported a 30 % increase in warranty claims linked to sub‑standard manifolds.
Discover the Solution →Why Hebei Yuanda’s ls engine exhaust manifold Beats the Competition
Core Advantages
- Powerful Factory – 25 000 m² of CNC‑driven casting capacity in Shijiazhuang, China.
- Quality Assurance – ISO 9001, RoHS, CE, and SAE‑approved heat‑treatment.
- OEM/ODM Design – Custom bore spacing, port‑matching, and surface‑finishing on request.
- High‑Speed Delivery – 7‑10 business days from order confirmation to port.
Technical Specification Table
| Parameter | Specification | Applicable LS Models |
|---|---|---|
| Material | A356‑T6 Aluminum / High‑Strength Cast Iron | LS1, LS2, LS3, L99 |
| Casting Process | High‑Pressure Die Casting (HPDC) / Sand Casting | All |
| Wall Thickness | 2.5 mm ± 0.2 mm | All |
| Flow Area (each port) | 45 mm² ± 3 mm² | LS1‑LS3 |
| Surface Finish | Ra ≤ 0.8 µm (machined) / Powder‑coated | All |
| Weight | 3.2 kg ± 0.05 kg | All |
Application Scenarios & Case Studies
Performance Tuning Shops (USA) – A California‑based shop replaced stock manifolds with our custom‑tuned version and recorded a 31 % torque increase on a 5.7 L LS3.
Fleet Maintenance (Logistics) – A Midwest delivery fleet ordered 150 units for their LS‑powered trucks, achieving a 12 % fuel‑efficiency gain after six months.
Start Your Project Today →Trusted by the Industry
exhaust-manifold-on-engine small-engine-exhaust-manifold
Customer Testimonials
- Mike D., Texas Performance Lab – “Switched to Yuanda’s aluminum manifold and saw a 30 % power boost with zero cracking after 500 hrs.”
- Laura S., West Coast Fleet Manager – “Reduced engine‑room weight by 0.4 kg per vehicle, saving $8 k annually on fuel.”
- Tom R., Aftermarket Distributor – “OEM‑grade quality at 40 % less cost than US suppliers – margin improved by 22 %.”
Certificates & Compliance
ISO 9001, CE, RoHS, SAE‑AS9100, FCC, VDE, GS, CB, IPPC – all documents available on request.
Frequently Asked Questions – ls engine exhaust manifold
What is the minimum order quantity (MOQ) for OEM designs?
We accept orders as low as 20 pieces for custom OEM/ODM designs. Larger volumes qualify for tiered discounts.
Can the manifold be machined to my exact port‑matching specs?
Yes. Our CNC machining center can achieve ±0.02 mm tolerance on port dimensions and surface finish Ra ≤ 0.4 µm.
What are the payment terms for first‑time overseas buyers?
30 % T/T deposit, 70 % balance against copy of BL. We also support L/C at sight for added security.
How long does shipping from Shijiazhuang to Los Angeles take?
Standard sea freight: 25‑30 days (port‑to‑port). Express air freight is available within 7‑10 days at an additional cost.
Do you provide after‑sales technical support?
Our US‑based engineering team offers 24 h email support and a 12‑month warranty on material defects.
Upgrade Your LS Engine Today – Limited Stock Available!
Order within the next 72 hours and receive a FREE performance‑test sample plus money‑back guarantee if power gain < 5 %.
Request Quote & SampleWhat U.S. Buyers Say
- John M., Performance Shop – California – “Installed the Yuanda manifold on a 5.7 L LS3, dyno showed a 31 % torque increase. No leaks after 800 hrs.”
- Emily K., Fleet Manager – Illinois – “Our delivery trucks now run 12 % farther per tank. The weight reduction made a real difference in our logistics costs.”
- David L., Aftermarket Distributor – Texas – “Margins improved by 22 % because the unit cost is $115 vs. $185 from US suppliers. Quality is identical.”
About the Author
Alex Chen, Senior Casting Engineer
With 18 years in high‑pressure die casting for automotive powertrain components, Alex leads the R&D team at Hebei Yuanda Trade Co., Ltd. He holds a Master’s in Metallurgical Engineering (Tsinghua) and is a certified SAE technical reviewer.
Get Your Custom Quote in 24 Hours
Fill the short form below, or reach us directly via WhatsApp or Email.
Phone: +86‑311‑808‑126‑83 | WhatsApp: +86 19333738338 (Ben) / +86 19333736198 (Linda) | Email: info@ydcastings.com
Hebei Yuanda Trade Co., Ltd., No.563 Xinhua Road, Shijiazhuang City, Hebei Province, P.R. China.
Engineered for performance tuners, fleet managers, and OEM partners who demand reliable flow, reduced back‑pressure, and cost‑effective sourcing . When the exhaust manifold fails to meet LS engine tolerances, you face: According to a
