$81.2 Buy It Now or Best Offer
free,30-Day Returns
Seller Store ctpowertrain
(46367) 99.4%,
Location: Cerritos, California
Ships to: US,
Item: 272836781372
Restocking Fee:20%
Return shipping will be paid by:Buyer
Returns Accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Other Part Number:CT Powertrain Products # 77898E-4K
OE/OEM Part Number:77898E-4K
Performance Part:Yes
Country/Region of Manufacture:United States
Interchange Part Number:S74507FA 74507FA
Manufacturer Part Number:77898E-4K
Sonnax Industries:Sonnax Industries
Part Brand:Sonnax Industries – High Performance
Surface Finish:ALUMINUM HOUSING VALVE W/ HI-TEMP RUBBER O’RINGS
Type:BOOST
Items Included:VALVE
Material:N/A
4L60E 4L65E NEW SONNAX 77898E-4K .470″ REVERSE BOOST VALVE AND SLEEVE KIT 1993-2005 EARLY PUMP DESIGN. THIS IS A NEW NEVER OPENED SONNAX REVERSE BOOST VALVE AND SLEEVE KIT FOR THESE AUTOMATIC TRANSMISSIONS; GMC CHEVY BUICK CADILLAC OLDSMOBILE PONTIAC 4L60E 1993-2005 (EARLY PUMP ONLY) 4L65E 1993-2005 (EARLY PUMP ONLY) NOTE: Fits early style units with 1.907″ long sleeve OE sleeve only. The 4L60-E, 4L65-E and 4L70-E transmissions will not function properly if the wrong early vs. late design assembly is installed. THIS KIT USES UPDATED O’RINGS TO SEAL BETTER AND HAS EPC SPOOL VALVE (INNER VALVE) DIAMETER OF .470″ AND IS A STOCK REPLACEMENT for Early Pump Design, 1.907″ Long Sleeve. COMPLAINT; Insufficient line rise 3-4 clutch failure Poor shift quality CAUSE; A worn boost sleeve can allow torque signal and reverse oil cross leakage or leakage to sump CORRECTION; These closely toleranced valve and sleeve kits restore hydraulic integrity and prevent leakage. This kits valves are in .470″ increased boost ratio sizes.Sonnax valve and sleeve kits restore hydraulic integrity and prevent leakage. SONNAX PRODUCT SUMMARY; Vehicles with a 4L60-E transmission frequently have poor line rise, which can result in 3-4 clutch, 2-4 band failure or poor shift quality. The duty cycle of the EPC solenoid causes the boost sleeve to wear quickly. Oil entering the torque signal orifice, leaks past the boost valve and exhausts at the reverse orifice. Oil enters the torque signal orifice, leaks past the boost valve, and exhausts through the reverse orifice, resulting in poor line rise. Reverse oil can exhaust both to the sump and back through the torque signal orifice. Increased spool diameters (.470″ EPC spool diameter), which will result in a higher boost ratio to raise line pressure and provide firmer shifts. The boost valves have been specially hard coated to eliminate excessive wear from occurring on the inside diameter of the sleeves. These boost sleeves have been manufactured from high quality aluminum, specifically designed to resist wear. Boost Valve Kit Part No. 77898E-4K Valve Sleeve O-Rings (2) Early pump design, .470″ Dia., O-ring style Dia.: 0.470″ Vehicles with a 4L60-E, 4L65-E or 4L70-E transmission frequently have poor line rise, which can result in 3-4 clutch, 2-4 band failure or poor shift quality. The duty cycle of the EPC solenoid causes the boost sleeve to wear quickly. Oil entering the torque signal orifice leaks past the boost valve and exhausts at the reverse orifice, resulting in poor line rise. Reverse oil can exhaust both to the sump and back through the torque signal orifice. The outside diameter of the boost sleeve also allows some leakage through the pump body, which decreases pressure rise. Sonnax offers four versions of reverse boost valve and sleeve kits for early pumps.100% MADE IN THE USA THESE ARE THE PARTS THE PROFESSIONALS USE. DON’T SETTLE FOR LESS.PLEASE NOTE: TRANSMISSION REMOVAL IS NOT REQUIRED TO COMPLETELY INSTALL THIS ITEM.PLEASE MAKE SURE OF YOUR TRANSMISSION PRIOR TO ORDERING YOUR ITEM. CT POWERTRAIN PRODUCTS PART NUMBER: 77898E-4K Store Policies Payment terms: All credit card purchases either called in or done online will have to clear before we will ship product. PayPal payments made with instant transfer with either PayPal funds or a credit card linked though PayPal will ship the same or next Business day. PayPal payments made with the PayPal E-Check feature will ship only once PayPal clears payment. Return policy details: Item(s) must be returned within: 30 DAYS Refund will be given as: Money Back to funding source or if paid by check or cash, refund will be a Company Check mailed to customer after processing of refund takes place. ALL RETURNS MUST BE MADE WITHIN 30 DAYS AND MUST BE RETURNED TO US IN RE-SELL ABLE CONDITION AND THE ORIGINAL PACKAGING MUST BE UNOPENED. ALL RETURNS MUST HAVE A COPY OR ORIGINAL OF OUR STORE INVOICE THAT CAME WITH SHIPMENT OF PRODUCT. WE DO NOT REFUND SHIPPING CHARGES TO OR FROM SELLER. International Ordering Guidelines: International Taxes and Tariffs: Our prices do not include taxes and tariffs. Customers outside of the United States may be required to pay these fees to the courier, as applicable, upon delivery. For example, Canadian customers will be assessed the 7% GST (Goods and Services Tax) or the appropriate HST (Harmonized Sales Tax) or PST (Provincial Sales Tax) when the order arrives. Please consult your local customs office or tax authority for information specific to your situation. Duties and Taxes: Duties and taxes are the responsibility of the person receiving the shipment and will be due at the time of delivery. Please take this into consideration when ordering, as the amount will vary by country and CT POWERTRAIN PRODUCTS does not have access to these amounts. * Our prices do not include taxes, tariffs or additional fees assessed by your customs broker. We cannot mark an item as “gift” or “return” to avoid customs fees. This is illegal in the USA and a Federal offense and we do not break this Policy/Law, EVER. If you are outside the U.S. and you would like a shipping quote, E-mail your physical address and we will provide a quote within 24 hours (M-F). Liability Waiver: WE WILL NOT REFUND OR PAY SHIPPING CHARGES ON RETURNS. WE WILL NOT BE HELD LIABLE FOR LABOR, RENTAL CAR OR INJURY. ALL CONTENT, NAMES, IMAGES, PICTURES ARE PROPERTY OF CT POWERTRAIN PRODUCTS AND CANNOT BE USED WITHOUT OUR CONSENT IN WRITING.
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