Product Description
EG / EK Civic, DC Integra & Del Sol H2B Fuel Line Tuck Kit with Inline Filter (Level 3)
The JBtuned Level 3 H2B Fuel Line Tuck Kit provides a clean feed-and-return fuel-system solution for compatible EG and EK Honda Civics, DC Acura Integras and Del Sol applications running an H2B engine and transmission combination.
Level 3 removes the large OEM firewall-mounted fuel filter, replaces it with a compact inline filter and upgrades the engine bay to a clean 6AN feed-and-return layout while retaining the vehicle's factory chassis fuel hard lines.
This is Level 3 in the JBtuned H2B fuel-system lineup: “I want it cleaner / tucked.”
Level 3 at a Glance
- Primary Fitment: Honda Civic EG, Honda Civic EK and Acura Integra DC with compatible H2B swap
- Additional Fitment: Compatible Honda Del Sol applications using EG-style chassis fuel plumbing
- Engine Configuration: Compatible H-Series engine with H2B drivetrain configuration
- System Type: Engine-bay feed-and-return fuel-system upgrade
- OEM Firewall Fuel Filter: Removed
- Replacement Fuel Filter: Compact serviceable inline filter included
- Factory Chassis Fuel Feed: Retained
- Factory Chassis Fuel Return: Retained
- Feed Line: 6AN
- Return Line: 6AN
- Fuel Hose: JBtuned 250 Series rubber-core hose
- Fuel Compatibility: Conventional pump gasoline
- Fuel Rail: Compatible aftermarket fuel rail required
- Fuel Pressure Regulator: Compatible return-style regulator configuration required
- Future Chassis Upgrade: Compatible with the JBtuned Fuel System Extension Kit
What Comes With the Level 3 Kit
- Pre-assembled 6AN engine-bay fuel-feed line assembly
- Pre-assembled 6AN engine-bay fuel-return line assembly
- Compact e85Freaks inline mini fuel filter
- Replaceable 30-micron bronze filter element
- Viton filter seals
- Chassis fuel-line connection components
- Fuel-rail connection components for the selected configuration
- Required connection hardware for the configured fuel-line system
Exact line and connection configurations vary according to the chassis, fuel rail and fuel pressure regulator selected when ordering.
A compatible aftermarket fuel rail is required and is not included unless purchased separately.
What Level 3 Changes
Level 3 replaces both the engine-bay fuel feed and return plumbing while removing the large OEM firewall-mounted fuel filter.
The vehicle's original chassis fuel-feed and fuel-return hard lines remain underneath the vehicle and continue to carry fuel between the engine bay and fuel tank.
This provides the cleaner tucked engine-bay layout associated with Level 3 without requiring the complete chassis fuel system to be replaced at the same time.
Modification of the existing chassis fuel-line connection points is required during installation.
Designed Specifically for H2B Applications
This kit was developed and configured around an H2B swap.
It should not automatically be assumed to fit a conventional H-Series or all-H22 installation simply because the engine family is similar.
H2B combinations can differ from conventional H-Series installations in engine position, intake-manifold arrangement, transmission configuration, mounts, header clearance and surrounding engine-bay components.
JBtuned has not verified this kit as a universal all-H22 fuel-line solution.
If your vehicle uses an H-Series combination that is not an H2B setup, contact JBtuned before ordering so the configuration can be reviewed.
Compact Inline Fuel Filter
The Level 3 H2B Fuel Line Tuck Kit includes a compact e85Freaks inline mini fuel filter in place of the large OEM firewall-mounted Honda fuel filter.
- Filter Element: Replaceable 30-micron bronze element
- Seals: Viton
- Construction: Serviceable inline design
The smaller inline filter allows the feed-side plumbing to fit naturally into the tucked engine-bay layout while retaining a serviceable fuel filter in the system.
6AN Feed & Return Plumbing
Level 3 uses a 6AN engine-bay fuel feed and 6AN engine-bay fuel return.
The JBtuned line assemblies connect the vehicle's existing chassis fuel plumbing to the aftermarket H-Series fuel rail and regulator configuration selected when ordering.
JBtuned supplies the configured fuel-line assemblies and required connection components so you do not have to determine the individual AN fittings and adapters needed to assemble the engine-bay system yourself.
250 Series Fuel Hose - Pump Gasoline
The H2B Level 3 Fuel Line Tuck Kit uses JBtuned 250 Series rubber-core fuel hose and is intended for conventional pump-gasoline applications.
250 Series hose is not intended for continuous or full-time E85 use.
If the vehicle will regularly run E85, ethanol-based race fuel or requires broader long-term fuel compatibility, the fuel system should be configured with the appropriate JBtuned 350 Series PTFE hose instead.
Fuel compatibility must be considered across the entire fuel system, including the hose, filter, seals, fuel pressure regulator, fuel pump and other fuel-contact components.
Not sure which fuel plumbing is appropriate? Read our guide to E85, PTFE fuel lines and flex-fuel systems.
Aftermarket Fuel Rail Required
A compatible aftermarket fuel rail is required for the H2B Level 3 Fuel Line Tuck Kit.
The factory fuel rail is not supported by the standard kit configuration.
Select the aftermarket fuel rail installed on the H-Series engine when ordering so JBtuned can configure the appropriate fuel-system connection.
If your fuel rail is not represented in the available options, contact JBtuned before ordering.
Fuel Pressure Regulator Configuration
The Level 3 H2B system uses a return-style fuel-system configuration and requires a compatible fuel pressure regulator arrangement.
Select the fuel pressure regulator being used when ordering so JBtuned can configure the appropriate regulator-side connections for the system.
If you are unsure whether your fuel rail and regulator combination is compatible, contact JBtuned before ordering.
Cleaner H2B Engine-Bay Layout
A fuel tuck system does not mean every fuel hose disappears from view.
The purpose of Level 3 is to remove unnecessary factory fuel-system clutter and create a cleaner, more organized engine-bay layout.
Removing the large firewall-mounted fuel filter and replacing the original engine-bay feed and return plumbing gives the H2B installation a cleaner AN-style layout while maintaining practical serviceability.
Final routing depends on the engine, intake manifold, fuel rail, fuel pressure regulator, header, H2B transmission configuration, mounts and other surrounding components.
Vehicle & Application Fitment
- Honda Civic EG with compatible H2B swap
- Honda Civic EK with compatible H2B swap
- Acura Integra DC with compatible H2B swap
- Compatible Honda Del Sol applications using EG-style chassis fuel plumbing
Final fitment depends on the H2B engine configuration, aftermarket fuel rail, fuel pressure regulator, intake manifold, header, mounts and surrounding engine-bay components.
If your combination is unusual or your components are not represented in the available options, contact JBtuned before ordering.
Ordering Options
Vehicle / Chassis: Select the Civic, Integra or compatible Del Sol chassis receiving the H2B Level 3 Fuel Line Tuck Kit.
Fuel Rail: Select the compatible aftermarket fuel rail installed on the H-Series engine. Different fuel rails require different connection configurations.
Fuel Pressure Regulator: Select the fuel pressure regulator configuration being used with the return-style fuel system so JBtuned can provide the appropriate regulator-side connections.
Inspect the Factory Chassis Fuel Lines
Level 3 retains the vehicle's original chassis feed and return hard lines underneath the vehicle.
Because EG, EK, DC and Del Sol chassis are now decades old, the condition of the original fuel plumbing should be inspected carefully before installation.
Factory hard lines showing significant corrosion, physical damage, deterioration or leakage should be replaced rather than reused simply because Level 3 is designed to connect to them.
If the existing chassis fuel plumbing is no longer suitable for continued service, the feed and return should be replaced as part of a properly planned fuel-system upgrade.
Want to Replace the Factory Chassis Fuel Lines Later?
Level 3 allows you to upgrade and clean up the engine-bay fuel system while continuing to use serviceable factory chassis fuel lines.
If you later decide to replace the remaining chassis feed and return plumbing, add the JBtuned Fuel System Extension Kit.
The Extension Kit continues the compatible Level 3 feed-and-return system from the engine bay back to the fuel tank.
This allows you to retain the H2B engine-bay system you already purchased while replacing the remaining factory chassis plumbing.
Upgrade the Feed & Return Together
If Level 3 is expanded with aftermarket chassis fuel plumbing, the feed and return should be upgraded together.
The JBtuned Fuel System Extension Kit continues both sides of the compatible Level 3 system back to the fuel tank rather than replacing only one side of the chassis plumbing.
Fuel Pump Hanger & Under-Car Line Support
Extending the H2B fuel system all the way to the fuel tank requires appropriate aftermarket feed-and-return connections at the fuel-pump hanger.
If the factory sending unit has not already been configured for the aftermarket AN plumbing and fuel pump being used, see the JBtuned Civic / Integra OEM Fuel Pump Hanger Upgrade Kit for compatible applications.
For compatible EG, EK and DC chassis, JBtuned also offers JBtuned EG EK Civic / DC Integra Fuel & Brake Line Holder Brackets for supporting compatible aftermarket fuel lines underneath the vehicle while allowing the OEM brake hard lines to remain in place.
The under-car brackets are designed for aftermarket fuel lines and are not intended to retain the original OEM fuel lines.
Also Building the H2B Clutch System?
For a matching hydraulic clutch solution, JBtuned also offers the JBtuned H2B Swap Clutch Line Kit.
The clutch-line kit is designed specifically for compatible H2B-swapped EG, EK and DC chassis.
JBtuned H2B Fuel-System Levels
- Level 1 - “I Just Need the Feed Line”: Retains the OEM firewall fuel filter, factory chassis plumbing and existing return-side system while replacing or upgrading the filter-to-rail fuel-feed line.
- Level 2 - “I Want Feed & Return”: Retains the OEM firewall fuel filter and factory chassis fuel lines while upgrading both the engine-bay feed and return plumbing.
- Level 3 - “I Want It Cleaner / Tucked”: Retains the factory chassis feed and return lines, removes the OEM firewall filter, adds a compact inline filter and upgrades the engine bay to a 6AN feed-and-return layout. You are here.
- Level 4 - “I Want to Replace Everything”: Replaces the complete factory chassis feed and return plumbing from the fuel tank to the engine and back.
Which H2B Fuel-System Level Is This?
This H2B Fuel Line Tuck Kit is Level 3.
Choose the Level 3 architecture when you want to remove the large OEM firewall-mounted fuel filter, add a compact inline filter and replace the engine-bay feed and return plumbing while continuing to use serviceable factory chassis fuel lines.
As the JBtuned H2B fuel-system lineup expands, the same Level 1 through Level 4 architecture used across the JBtuned fuel-system families will make it easier to identify how much of the vehicle's fuel system each product replaces.
Installation Notes
- Level 3 removes the OEM firewall-mounted fuel filter and replaces the engine-bay feed and return plumbing while retaining the factory chassis fuel hard lines.
- Modification of the existing chassis fuel-line connection points is required.
- Inspect the original chassis hard lines carefully before reuse.
- Fuel lines showing significant corrosion, damage, deterioration or leakage should be replaced.
- All fuel lines must be securely mounted and routed away from exhaust components, sharp edges, moving parts and areas where excessive heat or abrasion may damage the hose.
- H2B swaps can place fuel-system components near headers and other significant heat sources, so adequate clearance and thermal protection must be verified for the specific installation.
- After installation, pressurize the fuel system and carefully inspect every connection for leaks before starting or operating the vehicle.
Professional installation is recommended if you are unfamiliar with AN fuel systems, chassis fuel-line modification or H2B engine swaps.
For off-road use only.
Questions About Your H2B Fuel System?
If you are unsure whether this Level 3 system is appropriate for your build, contact JBtuned with your vehicle, H-Series engine, H2B configuration, fuel rail, fuel pressure regulator, fuel being used and future fuel-system goals.
