Pulley, HTD, 5M, 56-tooth, 1/2-inch Bore

Pulley, HTD, 5M, 56-tooth, 1/2-inch Bore

Part Number: 21123

Product Info
P/N 21123 Pulley, HTD, 5M, 56-tooth, 1/2-inch Bore
Convert to HTD style belt for 6gpm and 12 gpm mechanical pumps

  • Designed for 5M pitch, 15mm wide HTD drive belt.

  • 56 tooth driven pulley for installation on pump.

  • Compatible with 1/2" drive shaft with 1/8" key.

  • For use with P/N 11105 and 11107 Belt Drive Fuel Pumps.

  • Compatible with multiple HTD style drive pulley options available to optimize pump speed to engine RPM.

  • This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.

  • HTD Drive Pulleys for 50% - 71% Drive Ratios available.


HTD Drive Pulley options for 1" drive mandrel available:  click here.

 

Additional information
Easily convert your Aeromotive Gerotor style mechanical fuel pump from Gilmer style pulleys and belt to HTD style with this replacement pump pulley.  Works exclusively with the 1/2" drive shaft and 1/8" key-way on either the Aeromotive red 6-gpm P/N 11105 or the black 12-gpm P/N 11115 mechanical fuel pump.  Convert from the standard Gilmer style square-tooth cog-belt (1/2" wide "L" pitch timing belt) to the hi-torque HTD or radius tooth (15mm wide 5M pitch HTD timing belt).  This is the driven pulley for the pump.

Multiple matching drive pulleys for various pump to engine drive-ratios are available here to optimize fuel pump speed and ensure full fuel pump flow capacity.  Note: maximum pump speed should be at least 4,000 pump RPM and not exceed 5,000 pump RPM.

  • Designed for 5M pitch, 15mm wide HTD drive belt.

  • 56 tooth driven pulley for installation on pump.

  • Compatible with 1/2" drive shaft with 1/8" key.

  • For use with P/N 11105 and 11107 Belt Drive Fuel Pumps.

  • Compatible with multiple HTD style drive pulley options available to optimize pump speed to engine RPM.

  • HTD Drive Pulleys for 50% - 71% Drive Ratios available.

  • This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.


HTD Drive Pulley options for 1" drive mandrel available:  click here.

Product warranty

Retail Purchasers:

  • Warranty: 1 year from purchase date with proof.
  • Claims: Contact Aeromotive for issues and RGA. Pre-paid shipping required.
  • Remedies: Limited to product sale price. Not liable for incidental damages. Not for emission-controlled vehicles.
  • Contact: 913-808-2376, option 3 (have part, proof of purchase, pen, paper).

Distributors:

  • Warranty Returns: Require RGA and proof of customer purchase. Handled as repair or replacement.
  • Stock Adjustments: Annual returns need prior approval and RGA. Over 5% of annual sales incur 15% restocking fee. Account credit only, no cash refunds.

Returns & replacements

Returns:

  • Accepted within 90 days of purchase.
  • Prior authorization required; items must be new and resaleable.
  • Call 913-808-2376 to initiate a return and get an RGA.
  • Ship unused products in original packaging with proof of purchase.
  • You pay return shipping; use a trackable method.
  • Refund excludes initial shipping fees and may include up to a 15% restocking fee.
  • Refunds processed within 5-10 days of return acceptance.

Defective Items:

  • Call 913-808-2376 (Returns and Repairs) for assistance.
  • Follow RGA/Warranty protocol for refunds or replacements.

Limits of Responsibility:

  • See Product Warranty page for more info.

Price/Description Changes:

  • Prices, pictures, and descriptions may change.
  • Report discrepancies within 30 days.
  • No refunds for price differences on past or future orders.

Promotions:

  • Discount codes apply to web store orders only.
  • Not valid on previous orders or outside promotion dates.

Reviews

Pulley, HTD, 5M, 56-tooth, 1/2-inch Bore

Pulley, HTD, 5M, 56-tooth, 1/2-inch Bore

Part Number: 21123
$118.95
$118.95

Part Number: 21123
Does This part fit My vehicle?
Product details
1 Year Warranty 90 Days Return Policy
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Product Info
P/N 21123 Pulley, HTD, 5M, 56-tooth, 1/2-inch Bore
Convert to HTD style belt for 6gpm and 12 gpm mechanical pumps

  • Designed for 5M pitch, 15mm wide HTD drive belt.

  • 56 tooth driven pulley for installation on pump.

  • Compatible with 1/2" drive shaft with 1/8" key.

  • For use with P/N 11105 and 11107 Belt Drive Fuel Pumps.

  • Compatible with multiple HTD style drive pulley options available to optimize pump speed to engine RPM.

  • This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.

  • HTD Drive Pulleys for 50% - 71% Drive Ratios available.


HTD Drive Pulley options for 1" drive mandrel available:  click here.

 

Additional information
Easily convert your Aeromotive Gerotor style mechanical fuel pump from Gilmer style pulleys and belt to HTD style with this replacement pump pulley.  Works exclusively with the 1/2" drive shaft and 1/8" key-way on either the Aeromotive red 6-gpm P/N 11105 or the black 12-gpm P/N 11115 mechanical fuel pump.  Convert from the standard Gilmer style square-tooth cog-belt (1/2" wide "L" pitch timing belt) to the hi-torque HTD or radius tooth (15mm wide 5M pitch HTD timing belt).  This is the driven pulley for the pump.

Multiple matching drive pulleys for various pump to engine drive-ratios are available here to optimize fuel pump speed and ensure full fuel pump flow capacity.  Note: maximum pump speed should be at least 4,000 pump RPM and not exceed 5,000 pump RPM.

  • Designed for 5M pitch, 15mm wide HTD drive belt.

  • 56 tooth driven pulley for installation on pump.

  • Compatible with 1/2" drive shaft with 1/8" key.

  • For use with P/N 11105 and 11107 Belt Drive Fuel Pumps.

  • Compatible with multiple HTD style drive pulley options available to optimize pump speed to engine RPM.

  • HTD Drive Pulleys for 50% - 71% Drive Ratios available.

  • This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.


HTD Drive Pulley options for 1" drive mandrel available:  click here.

Product warranty

Retail Purchasers:

  • Warranty: 1 year from purchase date with proof.
  • Claims: Contact Aeromotive for issues and RGA. Pre-paid shipping required.
  • Remedies: Limited to product sale price. Not liable for incidental damages. Not for emission-controlled vehicles.
  • Contact: 913-808-2376, option 3 (have part, proof of purchase, pen, paper).

Distributors:

  • Warranty Returns: Require RGA and proof of customer purchase. Handled as repair or replacement.
  • Stock Adjustments: Annual returns need prior approval and RGA. Over 5% of annual sales incur 15% restocking fee. Account credit only, no cash refunds.

Returns & replacements

Returns:

  • Accepted within 90 days of purchase.
  • Prior authorization required; items must be new and resaleable.
  • Call 913-808-2376 to initiate a return and get an RGA.
  • Ship unused products in original packaging with proof of purchase.
  • You pay return shipping; use a trackable method.
  • Refund excludes initial shipping fees and may include up to a 15% restocking fee.
  • Refunds processed within 5-10 days of return acceptance.

Defective Items:

  • Call 913-808-2376 (Returns and Repairs) for assistance.
  • Follow RGA/Warranty protocol for refunds or replacements.

Limits of Responsibility:

  • See Product Warranty page for more info.

Price/Description Changes:

  • Prices, pictures, and descriptions may change.
  • Report discrepancies within 30 days.
  • No refunds for price differences on past or future orders.

Promotions:

  • Discount codes apply to web store orders only.
  • Not valid on previous orders or outside promotion dates.

Reviews

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