Will the HPS Intake Kit for Honda Civic Si cars fit a 1.8L Civic?

No. HPS lists part number 837-598 for the 2006-2011 Civic Si with the 2.0L engine only. The 1.8L DX, LX and EX models of the same years take the HPS 827-694 shortram with a heat shield instead, so match the kit to the engine before ordering.

Where does the air filter sit?

HPS describes the 837 Series as a cold air intake that relocates the filter outside the engine compartment to give the coolest inlet air temperature. According to HPS, cooler air carries more oxygen, which is how it explains the dyno gains of 8.9 whp and 7.1 lb-ft of torque recorded with this kit on the Civic Si.

Does the kit need a tune?

No. HPS states that the 837-598 does not require tuning and keeps a safe air fuel ratio. No modification is required during installation either; the tube and filter go in with the supplied couplers, T-bolt clamps and mounting hardware, and the HPS manual covers each step with clear pictures.

What comes in the kit?

The Intake Kit for Honda Civic Si 2.0L cars includes the mandrel-bent aluminum intake tube, a washable and reusable HPS Performance air filter, high-temperature reinforced silicone couplers, stainless steel T-bolt clamps, mounting hardware and installation instructions. HPS lists the kit at 7 lb, packed in a 12 inch cube box.

Is the air filter washable?

Yes. HPS supplies its own washable and reusable Performance air filter, designed to filter well without sacrificing airflow. Since the filter is mounted outside the engine compartment, check it regularly and wash it whenever it looks dirty so the K20Z3 keeps breathing freely.

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Description

HPS Cold Air Intake Kit for Honda Civic Si 2.0L

HPS’s Cold Air Intake Kit for Honda Civic Si 2.0L cars moves the air filter out of the engine compartment altogether, which is how HPS separates its 837 Series from a traditional intake layout. A 2-3/4 inch mandrel-bent aluminum tube takes the place of the restrictive factory air box on the 2006-2011 Si, and HPS recorded gains of 8.9 whp and 7.1 lb-ft of torque on its dyno. It is aimed at the K20Z3 owner who wants cooler intake air and a measured gain without a tune.

Design and Performance

Placing the filter outside the engine compartment is the point of the design, since HPS says the cooler air it draws carries more oxygen into the combustion chamber. The tube is lightweight mandrel-bent aluminum for heat dissipation, with reinforced silicone couplers and stainless steel T-bolt clamps at the joints. On a stock Si the gain is real but moderate, so the kit suits a stock or lightly modified car rather than a build chasing big power.

Features

Relocates the air filter outside the engine compartment for the coolest inlet air, according to HPS
Lightweight mandrel-bent aluminum tube in place of the factory air box
Race-proven reinforced silicone hoses and industrial grade stainless steel T-bolt clamps
Washable, reusable HPS Performance air filter
Step-by-step manual with clear pictures; no modification required
Black, blue, red or polished finish

Specifications

Intake tube size: 2-3/4 in
HPS dyno gains: 8.9 whp and 7.1 lb-ft
Weight: 7 lb
Shipping box: 12 x 12 x 12 in
Warranty: 2 years
HPS part number: 837-598

What’s Included

HPS aluminum intake tube
HPS Performance air filter (washable and reusable)
HPS stainless steel T-bolt clamps
HPS high-temperature reinforced silicone couplers
Mounting hardware
Installation instructions

Applications

Honda Civic Si: FG2 / FA5 | 2006-2011 | 2.0L I4 K20Z3

Notes

This Intake Kit for Honda Civic Si 2.0L cars is sold as one complete kit
HPS lists the 2006-2011 Civic Si 2.0L only; the 1.8L Civic of the same years uses a different HPS kit

Frequently Asked Questions

Will the HPS Intake Kit for Honda Civic Si cars fit a 1.8L Civic? No. HPS lists part number 837-598 for the 2006-2011 Civic Si with the 2.0L engine only. The 1.8L DX, LX and EX models of the same years take the HPS 827-694 shortram with a heat shield instead, so match the kit to the engine before ordering.
Where does the air filter sit? HPS describes the 837 Series as a cold air intake that relocates the filter outside the engine compartment to give the coolest inlet air temperature. According to HPS, cooler air carries more oxygen, which is how it explains the dyno gains of 8.9 whp and 7.1 lb-ft of torque recorded with this kit on the Civic Si.
Does the kit need a tune? No. HPS states that the 837-598 does not require tuning and keeps a safe air fuel ratio. No modification is required during installation either; the tube and filter go in with the supplied couplers, T-bolt clamps and mounting hardware, and the HPS manual covers each step with clear pictures.
What comes in the kit? The Intake Kit for Honda Civic Si 2.0L cars includes the mandrel-bent aluminum intake tube, a washable and reusable HPS Performance air filter, high-temperature reinforced silicone couplers, stainless steel T-bolt clamps, mounting hardware and installation instructions. HPS lists the kit at 7 lb, packed in a 12 inch cube box.
Is the air filter washable? Yes. HPS supplies its own washable and reusable Performance air filter, designed to filter well without sacrificing airflow. Since the filter is mounted outside the engine compartment, check it regularly and wash it whenever it looks dirty so the K20Z3 keeps breathing freely.

About HPS Performance

HPS Performance is a California manufacturer based in Irwindale, with more than 5,000 parts in metric and standard sizes, from reinforced silicone hoses and stainless steel clamps to aluminum intake tubing and complete air intake kits. Its multi-ply hoses are built to the SAE J20 coolant hose standard, and new kits are developed with SolidWorks CAD modelling, 3D scanning, CNC machining and dyno testing. HPS lists a two-year warranty on its intake and hose kits.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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HPS Cold Air Intake Kit for Honda Civic Si 2.0L

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HPS Cold Air Intake Kit for Honda Civic Si 2.0L

Design and Performance

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About HPS Performance

Reviews