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Flexfab Charge Air Couplers

Flexfab charge air couplers are silicone connectors that join the cold- and hot-side charge air pipework between a turbocharger, intercooler, and intake on diesel and heavy-duty truck engines. Flexfab, LLC has built elastomeric silicone hose and connector components in Hastings, Michigan since 1961, and its charge air connector (CAC) hose is engineered to hold a tight seal under boost pressure and the high under-hood temperatures these systems see. Our catalog carries roughly 9 Flexfab charge air coupler items, and we cross-reference legacy and OEM part numbers to a current equivalent through request a quote.

Which Charge Air Couplers Is Right for the Job?

The right part depends on where it sits in the charge air circuit and the rest of the silicone hose system feeding it. For coolant and general silicone runs that share the same engine, compare the broader silicone hoses and turbo boots range against your turbo and CAC layout. Where the line carries fluid under pressure, confirm the routing against our hydraulic hoses listings before ordering. High-vibration or longer straight runs that need burst resistance point toward wire reinforced coolant hose, while softer, lower-pressure connections fall under non-reinforced coolant hose. To finish a clean install, match clamps and adapters from accessories to the coupler ID. If you are unsure which family fits, measure the inside diameter at each end and the overall length, then confirm the bend geometry against the part you are replacing.

Cross-Referencing Flexfab, LLC Charge Air Couplers

If the part number stamped on your old coupler no longer crosses cleanly, we can match it to a current Flexfab equivalent or a comparable silicone CAC connector by dimension. Flexfab charge air couplers remain in active production with no known superseded equivalents, so most replacements are a straightforward size-for-size match once we confirm the inside diameter, wall construction, and length. Send the original part marking, a photo, or the failed coupler measurements and we will identify the replacement and equivalent parts that fit. Start a cross-reference at request a quote.

9 Flexfab Charge Air Couplers models · from $35.88 · all in stock

  • Trusted since 1963
  • Genuine Flexfab products
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  • (800) 823-4937
All 9 Flexfab Charge Air Couplers models & pricestap to compare every model
ModelProductPriceAvailability
7715-0002 7715-0002 | Turbo Boot Hot Side 4" x 6" $38.12 In stock
7727-0001 7727-0001 | Turbo Boot Hot Side 4" x 8" $40.50 In stock
7731-0001 7731-0001 | Turbo Boot Hot Side 3" x 6" $35.88 In stock
7732-0001 7732-0001 | Turbo Boot Hot Side 3.5" x 6" $37.38 In stock
7742-0001 7742-0001 | Turbo Boot Hot Side 4.5" x 6" $40.75 In stock
7753-0001 7753-0001 | Turbo Boot Cold Side 3.5" x 6" $38.00 In stock
7755-0002 7755-0002 | Turbo Boot Cold Side 4" x 6" $39.00 In stock
7758-0001 7758-0001 | Turbo Boot Cold Side 3" x 6" $39.95 In stock
7759-0001 7759-0001 | Turbo Boot Cold Side 4.5" x 6" $41.38 In stock

Flexfab Charge Air Couplers — common questions

Are these genuine Flexfab products?

Yes. Every Flexfab product we list is factory-new and genuine — not aftermarket or remanufactured. Item SKUs match the manufacturer part numbers, so you can verify any model directly against Flexfab documentation.

Can you help me choose the right model?

Yes — Northern Hydraulics has supplied hydraulic equipment since 1963. Call (800) 823-4937 with your application details, or send a quote request with the model you are replacing and we will cross-reference it to the right Flexfab part.

Do you offer volume pricing on Flexfab products?

Yes. For multi-unit or recurring orders, use the Request a Quote button — volume pricing on Flexfab equipment is quoted case by case, usually within one business day.

Call (800) 823-4937
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