~~Bear~~Effective ~~Stearns~~August ~~Asset~~23rd, ~~Backed Securities Mortgage Pass-Through Certificates Record Date: 10/31/04 Distribution Date: 11/26/04 BSA Series:~~ 2004~~-SD4~~ ~~Contact:~~OMB ~~Customer~~APPROVAL ~~Service~~OMB ~~- CTSLink Wells Fargo Bank, N.A. Securities Administration Services 7485 New Horizon Way Frederick, MD 21703 Telephone~~Number: ~~(301) 815~~3235-~~6600~~0060 ~~Fax~~Expires: ~~(301)~~March 815-6660 Certificateholder Distribution Summary Certificate Certificate Beginning Class Pass-Through Certificate Interest Principal Class CUSIP Description Rate Balance Distribution Distribution A-1 073879MC9 SEN 2.58000% 16131,~~318,700.00~~ ~~80,928.21~~2005 ~~3,909,971.35~~Estimated ~~A-2~~average ~~073879MF2~~burden ~~SEN~~hours ~~2.68000%~~per ~~17,924,400~~response.~~00 9,340~~.~~60 434,443~~.~~69 M-1 073879MD7 MEZ 2~~28.~~78000% 7,736,000.00 4,181.74~~ 0.00 M-2 073879ME5 MEZ 3.38000% 6,311,000.00 4,147.73 0.00 B 073879MG0 SUB 4.63000% 5,191,000.00 4,673.34 0.00 B-IO 073879MK1 SEN 0.00000% 0.00 742,015.16 0.00 R-1 073879MH8 RES 0.00000% 50.00 0.00 50.00 R-2 073879MJ4 RES 0.00000% 50.00 0.00 50.00 Totals 198,481,200.00 845,286.78 4,344,515.04

~~Certificateholder~~UNITED ~~Distribution~~STATES SECURITIES ~~Summary~~AND ~~(continued)~~EXCHANGE ~~Current Ending Cumulative Realized Certificate Total Realized Class Loss Balance Distribution Losses A-1 0.00 157~~COMMISSION Washington,~~408,728.65~~ ~~3,990,899~~D.~~56 0~~C.00 A-2 0.00 17,489,956.31 443,784.29 0.00 M-1 0.00 7,736,000.00 4,181.74 0.00 M-2 0.00 6,311,000.00 4,147.73 0.00 B 0.00 5,191,000.00 4,673.34 0.00 B-IO 0.00 0.00 742,015.16 0.00 R-1 0.00 0.00 50.00 0.00 R-2 0.00 0.00 50.00 0.00 Totals 0.00 194,136,684.96 5,189,801.82 0.00 All distributions required by the Pooling and Servicing Agreement have been calculated by the Certificate Administrator on behalf of the Trustee.20549

~~Principal~~FORM ~~Distribution Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (1) A~~8-1 161,318,700.00 161,318,700.00 0.00 3,909,971.35 0.00 0.00 A-2 17,924,400.00 17,924,400.00 0.00 434,443.69 0.00 0.00 M-1 7,736,000.00 7,736,000.00 0.00 0.00 0.00 0.00 M-2 6,311,000.00 6,311,000.00 0.00 0.00 0.00 0.00 B 5,191,000.00 5,191,000.00 0.00 0.00 0.00 0.00 B-IO 0.00 0.00 0.00 0.00 0.00 0.00 R-1 50.00 50.00 0.00 50.00 0.00 0.00 R-2 50.00 50.00 0.00 50.00 0.00 0.00 Totals 198,481,200.00 198,481,200.00 0.00 4,344,515.04 0.00 0.00 (1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.K

~~Principal~~CURRENT ~~Distribution~~REPORT PURSUANT ~~Statement~~TO ~~(continued)~~SECTION ~~Total~~13 ~~Ending~~OR ~~Ending~~15(d) ~~Total~~OF ~~Principal~~THE ~~Certificate~~SECURITIES ~~Certificate~~AND ~~Principal~~EXCHANGE ~~Class~~ACT ~~Reduction~~OF Balance Percentage Distribution A-1 3,909,971.35 157,408,728.65 0.97576244 3,909,971.35 A-2 434,443.69 17,489,956.31 0.97576244 434,443.69 M-1 0.00 7,736,000.00 1.00000000 0.00 M-2 0.00 6,311,000.00 1.00000000 0.00 B 0.00 5,191,000.00 1.00000000 0.00 B-IO 0.00 0.00 0.00000000 0.00 R-1 50.00 0.00 0.00000000 50.00 R-2 50.00 0.00 0.00000000 50.00 Totals 4,344,515.04 194,136,684.96 0.97811120 4,344,515.041934

~~Principal~~Date ~~Distribution~~of ~~Factors~~Report ~~Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class~~ (2)Date ~~Amount~~of ~~Balance~~earliest ~~Distribution~~event Distribution Accretion A-1 161,318,700.00 1000.00000000 0.00000000 24.23755801 0.00000000 A-2 17,924,400.00 1000.00000000 0.00000000 24.23755830 0.00000000 M-1 7,736,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 M-2 6,311,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 B 5,191,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 B-IO 0.00 0.00000000 0.00000000 0.00000000 0.00000000 R-1 50.00 1000.00000000 0.00000000 1000.00000000 0.00000000 R-2 50.00 1000.00000000 0.00000000 1000.00000000 0.00000000 2reported) November ~~All Classes are per $1~~19,~~000~~ ~~denomination.~~2004

~~Principal~~ Bear ~~Distribution~~Stearns Asset ~~Factors~~Backed ~~Statement~~Securities ~~(continued)~~I ~~Total Ending Ending Total Realized Principal Certificate Certificate Principal Class Loss~~ LLC (3)Exact ~~Reduction~~name ~~Balance~~of ~~Percentage~~Registrant ~~Distribution~~as ~~A-1~~specified ~~0.00000000~~in ~~24.23755801~~its 975.76244199 0.97576244 24.23755801 A-2 0.00000000 24.23755830 975.76244170 0.97576244 24.23755830 M-1 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 M-2 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 B 0.00000000 0.00000000 1,000.00000000 1.00000000 0.00000000 B-IO 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-1 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 R-2 0.00000000 1,000.00000000 0.00000000 0.00000000 1,000.00000000 (3charter) ~~Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.~~

~~Interest~~Delaware ~~Distribution~~(State ~~Statement~~or ~~Beginning~~other ~~Payment~~jurisdiction of ~~Original~~incorporation) ~~Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall A~~333-1113636 ~~161,318,700.00~~(Commission ~~2.58000%~~file ~~161,318,700.00~~number) ~~80,928.21 0.00 0.00 A~~20-20842986 ~~17,924,400~~(I.00 2.68000% 17,924,400.00 9,340.60 0.00 0.00 M-1 7,736,000.00 2.78000% 7,736,000.00 4,181.74 0.00 0.00 M-2 6,311,000.00 3.38000% 6,311,000.00 4,147.73 0.00 0.00 B 5,191,000.00 4.63000% 5,191,000.00 4,673.34 0.00 0.00 B-IO 0.00 0.00000% 203,570,401.68 0.00 0.00 0.00 R~~-1 50~~.~~00 0~~S.~~00000%~~ ~~50.00~~employer ~~0.00~~identification 0no.~~00 0.00 R-2 50.00 0.00000% 50.00 0.00 0.00 0.00 Totals 198,481,200.00 103,271.62 0.00 0.00~~)

~~Interest~~383 ~~Distribution~~Madison ~~Statement~~Avenue ~~(continued)~~New ~~Remaining~~York, ~~Ending~~New ~~Non-Supported~~York ~~Total~~(Address ~~Unpaid~~of ~~Certificate/~~principal ~~Interest~~executive ~~Realized Interest Interest Notional Class Shortfall Losses (4~~offices) ~~Distribution~~10179 Shortfall Balance A-1 0.00 0.00 80,928.21 0.00 157,408,728.65 A-2 0.00 0.00 9,340.60 0.00 17,489,956.31 M-1 0.00 0.00 4,181.74 0.00 7,736,000.00 M-2 0.00 0.00 4,147.73 0.00 6,311,000.00 B 0.00 0.00 4,673.34 0.00 5,191,000.00 B-IO 0.00 0.00 742,015.16 0.00 199,225,986.64 R-1 0.00 0.00 0.00 0.00 0.00 R-2 0.00 0.00 0.00 0.00 0.00 Totals 0.00 0.00 845,286.78 0.00 (4)ZIP ~~Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.~~Code)

~~Interest~~Registrant's ~~Distribution~~telephone ~~Factors~~number, ~~Statement~~including ~~Beginning~~area code ~~Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class~~ (5212) ~~Amount Rate Balance Interest Shortfall Shortfall A~~272-12000 161,318,700.00 2.58000% 1000.00000000 0.50166664 0.00000000 0.00000000 A-2 17,924,400.00 2.68000% 1000.00000000 0.52111089 0.00000000 0.00000000 M-1 7,736,000.00 2.78000% 1000.00000000 0.54055584 0.00000000 0.00000000 M-2 6,311,000.00 3.38000% 1000.00000000 0.65722231 0.00000000 0.00000000 B 5,191,000.00 4.63000% 1000.00000000 0.90027740 0.00000000 0.00000000 B-IO 0.00 0.00000% 0.00000000 0.00000000 0.00000000 0.00000000 R-1 50.00 0.00000% 1000.00000000 0.00000000 0.00000000 0.00000000 R-2 50.00 0.00000% 1000.00000000 0.00000000 0.00000000 0.00000000 5) All Classes are per $1,000 denomination.

~~Interest Distribution Factors Statement (continued) Remaining Ending Non-Supported Total Unpaid Certificate~~ N/ ~~Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance~~ A-1 0.00000000 0.00000000 0.50166664 0.00000000 975.76244199 A-2 0.00000000 0.00000000 0.52111089 0.00000000 975.76244170 M-1 0.00000000 0.00000000 0.54055584 0.00000000 1000.00000000 M-2 0.00000000 0.00000000 0.65722231 0.00000000 1000.00000000 B 0.00000000 0.00000000 0.90027740 0.00000000 1000.00000000 B-IO 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 R-2 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 (6)Former ~~Amount~~name ~~Does~~or ~~Not~~former ~~Include Excess Special Hazard~~address, ~~Bankruptcy,or~~if ~~Fraud~~changed ~~Losses~~since ~~Unless~~last ~~Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.~~report)

~~CERTIFICATEHOLDER~~Check ~~ACCOUNT~~the ~~STATEMENT~~appropriate ~~CERTIFICATE~~box ~~ACCOUNT~~below ~~Beginning~~if ~~Balance~~the ~~0.00~~Form ~~Deposits~~8-K ~~Payments~~filing is ofintended ~~Interest~~to ~~and~~simultaneously ~~Principal~~satisfy ~~4,997,127.74~~the ~~Liquidations,~~filing ~~Insurance~~obligation ~~Proceeds,~~of the ~~Reserve~~registrant ~~Funds~~under ~~0.00~~any ~~Proceeds~~of ~~from~~the ~~Repurchased~~following ~~Loans~~provisions ~~0.00~~(see ~~Other~~General ~~Amounts~~Instruction ~~(Servicer~~A.2. ~~Advances~~below): [ ] ~~279,191.50~~Written ~~Realized~~communications ~~Loss~~pursuant ~~(Gains,~~to ~~Subsequent~~Rule ~~Expenses~~425 &under ~~Recoveries)~~the ~~0.00~~Securities Act ~~Prepayment~~(17 ~~Penalties~~CFR 0230.00425) [ ] ~~Total~~Soliciting ~~Deposits~~material ~~5,276,319.24~~pursuant ~~Withdrawals~~to ~~Reimbursement~~Rule ~~for~~14a-12 ~~Servicer~~under ~~Advances~~the 0Exchange Act (17 CFR 240.0014a-12) [ ] ~~Payment~~Pre-commencement ofcommunications ~~Service~~pursuant ~~Fee~~to ~~86,517.42~~Rule ~~Payment~~14d-2(b) under ofthe ~~Interest~~Exchange ~~and~~Act ~~Principal~~(17 ~~5,189,801~~CFR 240.8214d-2(b)) [ ] ~~Total~~Pre-commencement ~~Withdrawals~~communications ~~(Pool~~pursuant ~~Distribution~~to ~~Amount~~Rule 13e-4(c) ~~5,276,319.24~~under the ~~Ending~~Exchange ~~Balance~~Act 0(17 CFR 240.0013e-4(c))

~~PREPAYMENT/CURTAILMENT~~Item ~~INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 0~~8.0001 Other ~~Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall 0.00~~Events

~~SERVICING~~Bear ~~FEES~~Stearns ~~Gross~~Asset ~~Servicing~~Backed ~~Fee~~Securities 84I LLC,~~821.00~~ ~~Master~~as ~~Servicing~~depositor ~~Fee~~(the “Depositor”) 1registered issuances of Asset-Backed Certificates on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933,~~696~~ as amended (the “Act”), by a Registration Statement on Form S-3 (Registration File No.42 ~~Supported~~333-113636) ~~Prepayment/Curtailment~~(as ~~Interest~~amended, ~~Shortfall~~the 0“Registration Statement”).00 ~~Net~~Pursuant ~~Servicing~~to ~~Fee~~the 86Registration Statement,~~517~~ the Depositor caused Bear Stearns Asset Backed Securities I LLC, Asset-Backed Certificates, Series 2004-SD4 to issue publicly its Asset-Backed Certificates, Series 2004-SD4 (the “Certificates”), on November 19, 2004 (the “Closing Date”).42

~~LOAN~~The ~~STATUS~~Certificates ~~STRATIFICATION/CREDIT~~were ~~ENHANCEMENT~~issued ~~STATEMENT~~pursuant ~~DELINQUENCY~~to ~~STATUS~~a ~~DELINQUENT~~pooling ~~BANKRUPTCY~~and ~~FORECLOSURE~~servicing agreement ~~REO~~(the ~~Total~~“Pooling Noand ofServicing ~~Loans~~Agreement”), Nodated ofas ~~Loans No~~ of ~~Loans~~October 1, No2004 of(the ~~Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0~~“Cut-29Off ~~Days 0 0 0 0 0.00 0.00 0.00 0.00 30 Days 179 0 0 0 179 31~~Date”),~~360,080.25~~ ~~0.00~~among ~~0.00~~the ~~0.00 31~~Depositor,~~360,080.25~~ 60EMC ~~Days 56 0 0 0 56 10~~Mortgage Corporation,~~273,457.57~~ ~~0.00~~as ~~0.00~~Seller ~~0.00~~and 10Servicer,~~273,457.57~~ 90Wells ~~Days~~Fargo ~~35 0 0 0 35 6~~Bank,~~736,453.26~~ 0N.~~00 0~~A.~~00 0.00 6~~,~~736,453.26~~ ~~120~~as ~~Days~~Securities Administrator 3and 0Master ~~0 0 3 572~~Servicer,~~344.00~~ ~~0.00~~and ~~0.00~~JPMorgan ~~0.00~~Chase ~~572~~Bank,~~344.00~~ ~~150~~as ~~Days 0 0 0 0 0 0~~Trustee.00 0.00 0.00 0.00 0.00 180+ Days 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 Totals 273 0 0 0 273 48,942,335.08 0.00 0.00 0.00 48,942,335.08 No of Loans No of Loans No of Loans No of Loans No of Loans Principal Balance Principal Balance Principal Balance Principal Balance Principal Balance 0-29 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 30 Days 16.497696% 0.000000% 0.000000% 0.000000% 16.497696% 15.723933% 0.000000% 0.000000% 0.000000% 15.723933% 60 Days 5.161290% 0.000000% 0.000000% 0.000000% 5.161290% 5.151108% 0.000000% 0.000000% 0.000000% 5.151108% 90 Days 3.225806% 0.000000% 0.000000% 0.000000% 3.225806% 3.377655% 0.000000% 0.000000% 0.000000% 3.377655% 120 Days 0.276498% 0.000000% 0.000000% 0.000000% 0.276498% 0.286973% 0.000000% 0.000000% 0.000000% 0.286973% 150 Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 180+ Days 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% 0.000000% Totals 25.161290% 0.000000% 0.000000% 0.000000% 25.161290% 24.539669% 0.000000% 0.000000% 0.000000% 24.539669%

~~OTHER~~Capitalized ~~INFORMATION~~terms ~~Current~~not ~~Period~~defined ~~Class~~herein Ahave ~~Insufficient~~the ~~Funds~~meanings ~~0.00~~assigned in ~~Principal~~the ~~Balance~~Pooling ofand ~~Contaminated~~Servicing ~~Properties~~Agreement ~~0.00~~attached ~~Periodic~~hereto ~~Advance~~as ~~279,191~~Exhibit 4.501.

~~COLLATERAL~~Item ~~STATEMENT Collateral Description Mixed ARM Weighted Average Gross Coupon 5~~9.~~492768%~~01 Financial ~~Weighted~~Statements ~~Average~~and ~~Net Coupon 4~~Exhibits.992768% Weighted Average Pass-Through Rate 4.982768% Weighted Average Maturity(Stepdown Calculation ) 339 Beginning Scheduled Collateral Loan Count 1,104 Number Of Loans Paid In Full 19 Ending Scheduled Collateral Loan Count 1,085 Beginning Scheduled Collateral Balance 203,570,401.97 Ending Scheduled Collateral Balance 199,225,986.64 Ending Actual Collateral Balance at 31-Oct-2004 199,441,710.32 Monthly P &I Constant 1,142,956.50 Special Servicing Fee 0.00 Prepayment Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Scheduled Principal 211,152.37 Unscheduled Principal 4,133,262.67 Required Overcollateralization Amount 0.00 Overcollateralized Increase Amount 0.00 Overcollateralized reduction Amount 0.00 Specified O/C Amount 8,142,816.08 Overcollateralized Amount 5,089,301.68 Overcollateralized Deficiency Amount 3,053,514.40 Base Overcollateralized Amount 0.00

~~Miscellaneous~~(a) ~~Reporting~~Not ~~Three Month Rolling Average 0~~applicable.~~000000% Trigger Event NO~~

(b)	Not applicable.

(c)

Exhibits:

1.1

4.1

99.1

99.2

99.3

99.4

99.5

99.6

Underwriting Agreement

Pooling and Servicing Agreement

Assignment and Assumption Agreement

Yield Maintenance Agreement

Yield Maintenance Agreement

Yield Maintenance Agreement

Yield Maintenance Agreement

Yield Maintenance Agreement

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

BEAR STEARNS ASSET BACKED
SECURITIES I LLC

By: /s/Joseph T. Jurkowski, Jr.
      Name: Joseph T. Jurkowski, Jr.
      Title:  Vice President

Dated: December 7, 2004

EXHIBIT INDEX

Exhibit Number

Description

1.1	Underwriting Agreement, dated as of November 15, 2004, between the Depositor and Bear, Stearns & Co. Inc., as underwriter.

4.1	Pooling and Servicing Agreement, dated as of October 1, 2004, among the Depositor, EMC Mortgage Corporation, as Seller and Servicer, Wells Fargo Bank, N.A., as Securities Administrator and Master Servicer, and JPMorgan Chase Bank, as Trustee.

99.1	Assignment and Assumption Agreement, dated as of November 19, 2004, among EMC Mortgage Corporation, the Trustee and Wells Fargo Home Mortgage, Inc.

99.2	Yield Maintenance Agreement, dated November 19, 2004, between between Bear Stearns Financial Products Inc. and the Trustee.

99.3	Yield Maintenance Agreement, dated November 19, 2004, between between Bear Stearns Financial Products Inc. and the Trustee.

99.4	Yield Maintenance Agreement, dated November 19, 2004, between between Bear Stearns Financial Products Inc. and the Trustee.

99.5	Yield Maintenance Agreement, dated November 19, 2004, between between Bear Stearns Financial Products Inc. and the Trustee.

99.6	Yield Maintenance Agreement, dated November 19, 2004, between between Bear Stearns Financial Products Inc. and the Trustee.

Filing Compare · Bearn Stearns Asset Backed Securities Trust 2004-SD4