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Tillotson High Volume(Double Stack, Alky) Fuel Pump Gasket
16B-252 Tillotson Alky (Methanol) Fuel Pump Gasket
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Tillotson High Volume(Double Stack, Alky) Fuel Pump Gasket

Part Number: 16B-252
Online Price: $0.89
16B-252 Tillotson High Volume Fuel Pump Gasket – .020"
Availability: In Stock.

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Description

16B-252 Tillotson High Volume Fuel Pump Gasket – .020" Thick


The 16B-252 Fuel Pump Gasket is designed specifically for Tillotson High Volume (Double Stack / Alky) fuel pump stacks. This gasket is installed beneath the fuel pump diaphragm, creating a critical seal that ensures consistent fuel flow and optimal carburetor performance—especially in high-demand methanol-fueled racing applications.


Incorrect installation (placing the gasket above the diaphragm) can lead to fuel pump inefficiency, leaks, and erratic tuning behavior. Proper gasket placement is essential to maintaining fuel pressure stability under race conditions.


Key Features:

  • OEM Tillotson fuel pump gasket
  • Compatible with Double Stack / Alky / High Volume fuel pump plates
  • .020" thick fiber gasket for durable sealing
  • Designed for methanol-fueled performance carburetors
  • Helps maintain proper diaphragm movement and pump stack sealing


Installation Tip:

Apply a light coat of mineral oil (like Marvel Mystery Oil) to both gasket surfaces during installation. This reduces sticking, prevents tearing during disassembly, and ensures clean separation during rebuilds.


Specifications:

  • Thickness: .020"
  • Material: High-quality fiber gasket
  • Position: Installed below the fuel pump diaphragm
  • Fitment: All Tillotson High Volume (Double Stack / Alky) fuel pump stacks


Recommended Maintenance:

  • Replace with every main metering diaphragm change (approx. every 3–5 races)
  • Inspect during carburetor rebuilds for compression set or damage
  • Compatible with rebuild kits like P6-MDG, P8-MRK (for HL/HW), and P7-MRK (for HR)


Fits Fuel Pump Stacks On:

  • HL-348A/B/C/D/E
  • HL-334WXA, HL-360C
  • HR-181B, HR-184A, HR-190A
  • HR-191C, HR-196A, and more Tillotson high-performance models

FAQ

Q1: What is the function of the 16B-252 Tillotson Fuel Pump Gasket?

A: This gasket creates a seal beneath the fuel pump diaphragm in high volume (double stack) Tillotson pump stacks. It ensures proper fuel flow and pressure regulation, especially in methanol (alky) racing setups.


Q2: Where does the 16B-252 gasket go in the pump stack?

A: It must be installed below the fuel pump diaphragm. Installing it above can cause erratic tuning, reduced fuel flow, or internal leakage.


Q3: Is the 16B-252 gasket reusable?

A: Yes, it can be reused if it remains undamaged. However, for optimal reliability, we recommend replacing it every 3–5 races or with each diaphragm change.


Q4: What carburetors use the 16B-252 gasket?

A: It fits any Tillotson High Volume (Double Stack / Alky) fuel pump stack, including HL-348, HL-334WXA, HL-360C, HR-181B, HR-196A, and others.


Q5: What thickness is the 16B-252 gasket?

A: It is .020 inches thick, made from high-quality fiber material resistant to methanol and high-RPM fuel system stress.


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