Gates
Molded Coolant Hose

Gates 21435 Radiator Coolant Hose - Lower

Brand Gates 21435
Position Lower
Material Epdm
End 1 Inside Diameter 1.5
End 1 Inside Diameter 38
End 2 Inside Diameter 1.5
End 2 Inside Diameter 38
Contains Spring No
Centerline Length 11.8
Centerline Length 300
Branch Quantity 0
9839 Yes
9845 0
Modular Hose No
Molded Yes
Number of Quick Connect Fittings 0
Product line Molded Coolant Hose
Fits Mazda · 2 vehicles

OEM-quality specifications. A molded coolant hose built for replacement applications.

EPDM construction. Resists heat and coolant exposure for dependable service.

Molded design. Provides a precise hose shape for easier installation.

Cross-references Ansa 8139, FEL-PRO 61424 and Gates 21435 for the same application. See all 11.

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Gates 21435 Molded Coolant Hose

Gates 21435 is a molded radiator coolant hose built for lower cooling-system routing on select Mazda RX-7 applications. Made from EPDM and formed to OEM-style dimensions, it provides a direct replacement path for vehicles that need a shaped hose with a 1.5 in. (38 mm) inside diameter at both ends and an 11.8 in. (300 mm) centerline length.

The Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant routing needs with application-specific shapes and sizing. For buyers searching for a Mazda RX-7 lower radiator hose replacement, Gates 21435 offers a molded fit that follows the original hose path more closely than universal hose stock.

Key Features

  • Brand: Gates Molded Coolant Hose
  • Part number: 21435
  • Part type: radiator coolant hose
  • EPDM construction for cooling-system service
  • Molded hose design for shaped routing
  • 1.5 in. / 38 mm inside diameter at both ends
  • 11.8 in. / 300 mm centerline length
  • No spring and no quick-connect fittings

Detailed Description

Gates 21435 is a molded lower coolant hose for 1984-1985 Mazda RX-7 models. It is built to OEM-quality specifications and sized for direct radiator hose replacement where a formed hose is required. The EPDM material is commonly used in coolant applications because it is suited to heat and coolant exposure, while the molded shape helps maintain the intended routing in the engine bay. If you are replacing a worn or leaking Mazda RX-7 lower hose, Gates 21435 provides a precise service part for that application.

This part cross-references FEL-PRO 61424 for the same application.

What It Helps Fix

  • Coolant leaks from a cracked or aged lower radiator hose
  • Softening, swelling, or collapse in an original hose
  • Improper hose routing after prior repairs
  • Cooling-system service on a 1984-1985 Mazda RX-7
  • Replacement of a hose with incorrect molded shape or dimensions

Installation Notes and Tips

Verify hose routing, end diameters, and centerline length before installation. Inspect hose clamps, necks, and adjacent cooling-system components for wear or corrosion before reassembly. Confirm the hose is seated fully and routed without twist or contact points that could cause abrasion. This part is listed for the lower position on 1984-1985 Mazda RX-7 models.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for application-specific fit and cooling-system service. The Gates Molded Coolant Hose line is engineered to cover a wide range of replacement cooling hose needs, including lower radiator hose applications like this Mazda RX-7 part.

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
1985MazdaRX-71.3LR2GASLowerMolded Coolant Hose
1984MazdaRX-71.3LR2GASLowerMolded Coolant Hose
Directly replaces or cross-references 11 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Ansa — 8139FEL-PRO — 61424Gates — 21435142-609420164S30415521CKM-2165MH-4435N30415521AN30415521CN32615186