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(PVC) in Black (part number 9741) is a step-down connector that transitions between a 4-inch and a 3.5-inch intake tube, air box outlet, or ducting component in naturally aspirated applications. The 9741 eliminates the need to fabricate a custom adapter or source a hard-to-find OEM reducer, making it a practical solution for cold-air intake builds, air box modifications, and replacement of cracked or deteriorated factory couplers. Included stainless steel worm-gear clamps ensure a leak-free, rattle-resistant connection at both ends.
Key Features
- Spectre describes the 9741 as approximately 3 inches in length.
- Included stainless steel worm-gear clamps ensure a leak-free, rattle-resistant connection at both ends.
- The Spectre 9741 includes two stainless steel worm-gear hose clamps, one for the 4-inch end and one for the 3.5-inch end.
- PVC couplers are compatible with aluminum, mild steel, ABS plastic, and similar tube materials.
- Position each clamp over the coupler-tube overlap zone and tighten evenly to 30-35 in-lb.
- Yes, if the airbox outlet measures 4 inches OD and the filter inlet measures 3.5 inches OD (or vice versa).
Fitment
| Application Type | Universal or dimensional component |
|---|---|
| Required Verification | Exact dimensions, material, connection, mounting interface, and companion components |
Specifications
| Brand | Spectre |
|---|---|
| Manufacturer Part Number | 9741 |
| Product Type | Air Intake Parts |
| Fitment Type | Universal or dimensional |
| Condition | New |
What's Included
One new Spectre air intake parts identified by manufacturer part number 9741. Hardware, clamps, hoses, filters, adapters, and service supplies are included only when stated for this exact product.
About Spectre
Spectre Performance develops air filters, intake systems, intake components, engine accessories, and related vehicle products for direct-fit and dimensional applications.
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Frequently Asked Questions
How do I confirm Spectre 9741 fits my setup?
Match the exact dimensions, material, connection size, mounting interface, and required companion components. Similar appearance alone does not confirm compatibility.
Does Spectre 9741 require emissions verification?
Yes. Check the current Spectre application and California restriction for this exact part number before purchase or installation.
What should be checked after installing Spectre 9741?
Verify mounting, clamps, fasteners, seals, hoses, sensors, wiring, and surrounding clearance as applicable. Inspect for leaks or contact before normal operation.
Installation Instructions
Follow the current Spectre instructions for manufacturer part number 9741. Confirm fitment, clean mating surfaces, secure every connection, preserve sensor orientation, check surrounding clearance, and verify emissions requirements before operation.
Spectre
Shop Spectre air intake systems, replacement air filters, intake tubing, couplers, clamps, engine accessories, and service products by exact manufacturer part number and verified application.Choosing the Correct Spectre Product Match the complete Spectre manufacturer part number Confirm the listed year, make, model, engine, and emissions notes for direct-fit products Verify diameter, material, bend, connection, sensor, and mounting details for universal components Review included filters, clamps, adapters, hardware, and current installation instructions Vehicle FitmentVehicle-specific products use collapsed year ranges and canonical year, make, model, and only legitimate required submodel data for Convermax filtering. Engine displacement, engine configuration, fuel type, drivetrain, and chassis codes remain application details rather than vehicle models.Related Spectre Products All Spectre products Cold air intakes Air filters Air intake components Frequently Asked QuestionsHow do I...
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